The Definitive Guide to Vetro Artistico Murano VAM Labels: History, Authentication, and the Complete Corrected Code Registry (001–103)
For decades, authenticating Murano glass has been one of the most challenging tasks for art historians, appraisers, and collectors. In a globalized market flooded with cheap counterfeit glass imported from Eastern Europe and Asia, distinguishing a masterpiece of Venetian hot-working from a mass-produced "Murano-style" imitation is vital to preserving both financial value and cultural heritage.
The establishment of the official Marchio Vetro Artistico® Murano (VAM) collective trademark in 1994 was supposed to resolve this dilemma. However, collectors soon ran into a different problem: the internet's most popular reference lists contain critical misattributions, outdated listings, and missing codes.
To correct the historical record, the Murano Animals Research Team conducted a rigorous forensic audit of the trademark's administrative history. By accessing and analyzing original archived versions of the official Consortium website (www.muranoglass.com) spanning a 13-year period (2012–2025), the team reconstructed the most extensive, complete, and accurate VAM label directory ever compiled.
1. The Historical and Legislative Genesis of the VAM Label
The geographic concentration of glassmaking on the Venetian island of Murano is a unique industrial cluster with over a millennium of continuous history. This tradition was historically protected by the strict monopoly laws of the Venetian Republic, but the fall of the Republic in 1797 dismantled those ancient guild structures. By the late 20th century, Murano was facing an unprecedented systemic crisis.
The Asymmetric Market Failure
In the 1980s and 1990s, the local Venetian retail market became saturated with low-cost, chemically distinct counterfeit glass that was deceptively marketed as authentic. Economists estimated that these brand free-riders were eroding between forty and sixty percent of authentic Murano factories' turnover. Because the district was composed of hundreds of highly competitive family workshops, individual firms lacked the capital or legal framework to police retail fraud independently.
The Genesis of Promovetro and State Protection
In response, Murano glassmakers banded together in 1985 to form the Consorzio Promovetro Murano. This unified front bridged small-scale artisan workshops represented by Confartigianato Venezia with larger industrial glass factories represented by Confindustria Venezia (now Confindustria Veneto Est).
While Promovetro successfully promoted the brand globally, it lacked the statutory authority to issue legally binding certificates of origin or enforce standardized quality protocols. The breakthrough came with the passage of Veneto Regional Law No. 70 on December 23, 1994. Sponsored by a coalition of regional councilors and unanimously approved by the regional assembly, this landmark legislation created the Vetro Artistico® Murano collective trademark as a public intellectual property asset owned by the Veneto Region.
Key milestones in its administrative timeline include:
- September 25, 1998: The collective trademark is officially registered with the European Union Intellectual Property Office (EUIPO) in Alicante.
- October 19, 2001: Under regional resolution DGR No. 2753, the daily management, technical enforcement, and physical distribution of the secure labels are officially delegated to the Consorzio Promovetro Murano.
- February 5, 2026: The Veneto Region formalizes Deliberation No. 40/2026, renewing Promovetro’s stewardship of the trademark under a new 9-year agreement.
- May 16, 2026: The Italian Ministry of Enterprises and Made in Italy (MIMIT) designates Murano glass as one of the nation's very first non-agricultural Geographical Indications (GIs), creating a path for transition into the European Union's newly established craft GI registry under EU Regulation 2023/2411.
2. What Does "Consortium Verified" Mean?
To understand how a VAM code functions, one must understand the regulatory mechanics behind the label:
- The Geographic Restriction: Under Article 3 of Regional Law No. 70/1994, trademark licensing is strictly confined to workshops whose manufacturing facilities are physically located within the territorial boundaries of the island of Murano. This legally prevents manufacturers from maintaining offices in Venice while outsourcing hot-work to cheaper factories on the Italian mainland or overseas.
- The Concession Code: When a workshop qualifies for concessionaire status, the Veneto Region issues a decree granting usage rights and assigning a unique identification number (the VAM code).
- The Secure Label: The Consortium issues specialized, serialized, tamper-proof adhesive foil labels to each licensed workshop. These labels are printed in gold leaf on either a red background (indicating glass worked with a pontil or traditional blowing) or a blue background (for lampworked glass, mirrors, beads, and cold-worked items).
- Self-Destruct Technology: To prevent counterfeiters from peeling a genuine label off a damaged or low-value authentic piece and sticking it onto a counterfeit work, VAM labels feature self-destructing adhesive properties. Any attempt to remove the sticker results in the immediate tearing and fragmentation of the foil, rendering it useless.
For a piece to be Consortium Verified, its printed numeric code must correspond exactly to the historical concessionaire registry maintained by the Consortium and the Veneto Region.
3. The Forensic Audit: Correcting Internet Anomalies
Standard online lists are notoriously unreliable because they are static snapshots. For example:
- Misattribution of Code 010: Early online databases misattributed Code 010 to Signoretto Lampadari. Forensic analysis of original regional decrees reveals that Code 010 actually belongs to the historic glasshouse Nason & Moretti, while Signoretto Lampadari holds Code 030.
- The Code 015/085 "Ragazzi Migration": Outdated databases list both 015 and 085 as separate, unrelated entities. Web archives audited by our research team show that Ragazzi & C. snc was originally assigned Code 015 in 2012, but officially migrated to Code 085 in 2013.
- Browser Auto-Translation Corruption: Many online resources contain corrupted names due to automatic browser translations of Italian registries. For instance, La Fucina del Vetro (The Glass Forge) is frequently listed as "The Glass Forge," and Ragazzi sas (Boys sas) is hilariously corrupted to "SAS Boys."
- Defunct and Closed Workshops: Once a furnace shuts its doors, its name is dropped from the active trademark map on the modern website. Active search tools completely erase these historical concessionaires. Our team's research reconstructed these inactive listings—such as Zanchi srl (VAM-014), which was listed in 2012 only, and Sas Di Pi Vetreria Artigiana (VAM-033), which closed in 2020.
The Murano Animals Research Team has successfully re-integrated these historical details, matching physical label evidence with digital web archives to produce a seamless timeline.
4. The Master VAM Code Registry (001–103)
This registry utilizes the standardized, audited nomenclature of the Murano Animals Research Team Mapping to ensure perfect alignment with physical seals found in the wild.
| Code | Standardized Catalog Name | Verification Status | Historical Timeline Notes |
|---|---|---|---|
| 001 | Futura T&B | [Consortium Verified] | Listed 2012–2015; removed after 2015. |
| 002 | Ongaro & Fuga | [Consortium Verified] | Consistently listed as Ongaro & Fuga snc. |
| 003 | Ercole Moretti | [Consortium Verified] | Consistently listed as Ercole Moretti & F.lli snc. |
| 004 | Vetreria Artistica Oball | [Consortium Verified] | Oball snc (2012–2014); Vetreria Artistica Oball Srl (2015–2025). |
| 005 | Artifex | [Legacy Archive] | Artifex snc; no modern web data found. |
| 006 | Vetreria Artistica Rosa (or Begotti Gianni) | [Legacy Archive] | Identified via Murano Animals Research Team Mapping. |
| 007 | Fornace Ferro Murano | [Consortium Verified] | Active 2012–2019; associated with Yalos Murano (2020–2024). |
| 008 | Andromeda International | [Legacy Archive] | Andromeda International srl; inactive in modern listings. |
| 009 | Galliano Ferro | [Consortium Verified] | Verified historic concessionaire. |
| 010 | Nason & Moretti | [Legacy Archive] | Nason & Moretti srl; Signoretto misattributed here in early records. |
| 011 | Gino Cenedese & Figlio | [Consortium Verified] | Listed consistently under Cenedese srl. |
| 012 | Alfredo Barbini | [Legacy Archive] | Alfredo Barbini srl; inactive in modern listings. |
| 013 | Unknown | [Legacy Archive] | Unknown; Unknown. |
| 014 | Zanchi | [Consortium Verified] | Zanchi srl; listed in 2012 only; closed. |
| 015 | Ragazzi & C. | [Consortium Verified] | Original 2012 listing; migrated to Code 085 in 2013. |
| 016 | Antichi Angeli | [Legacy Archive] | Antichi Angeli sas. |
| 017 | Vetreria Artistica Mazzuccato | [Legacy Archive] | Mazzuccato Gaetano Gino. |
| 018 | Vetreria Murrine Int'l | [Legacy Archive] | VMI; inactive in modern listings. |
| 019 | Mazzuccato | [Legacy Archive] | Mazzuccato srl. |
| 020 | TFZ Internazionale | [Legacy Archive] | TFZ Internazionale srl. |
| 021 | Fratelli Tosi | [Consortium Verified] | Fratelli Tosi srl; listed 2012–2016; removed after 2016. |
| 022 | Gambaro & Poggi | [Consortium Verified] | Rebranded as Gambaro e Tagliapietra srl in 2016. |
| 023 | Zanetti Murano | [Consortium Verified] | Consistently listed as Zanetti Murano srl. |
| 024 | Vetreria Artistica EFFE | [Consortium Verified] | Effe Vetreria Artistica. |
| 025 | Due D srl | [Legacy Archive] | Recovered from Murano Animals Research Team Mapping. |
| 026 | La Perla Veneziana | [Consortium Verified] | Listed 2012–2022; removed 2023–2025. |
| 027 | AV Mazzega | [Consortium Verified] | AV Mazzega srl (Mazzega 1946). |
| 028 | Linea Padovan | [Legacy Archive] | Linea Padovan. |
| 029 | Ars Murano | [Consortium Verified] | Consistently listed as Ars Murano srl. |
| 030 | Signoretto Lampadari | [Consortium Verified] | Consistently listed as Signoretto Lampadari. |
| 031 | De Biasi | [Consortium Verified] | Listed 2012–2022; removed 2023–2025. |
| 032 | Seguso Gianni | [Consortium Verified] | Consistently listed as Seguso Gianni. |
| 033 | Sas Di Pi Vetreria Artigiana | [Consortium Verified] | Closed in 2020; removed after 2021. |
| 034 | Giuliano Tosi sas | [Legacy Archive] | Recovered from Murano Animals Research Team Mapping. |
| 035 | De Majo Illuminazione | [Consortium Verified] | Listed 2012–2016; removed after 2016. |
| 036 | Artigianato Muranese | [Consortium Verified] | Snc (2012–2019); Srl (2020–2025). |
| 037 | Formia | [Consortium Verified] | Restructured as Fornace Mian under Code 101 in 2015. |
| 038 | Alessandro Mandruzzato | [Consortium Verified] | Consistently listed as Alessandro Mandruzzato. |
| 039 | V. Nason & C srl | [Legacy Archive] | Recovered from Murano Animals Research Team Mapping. |
| 040 | Vetreria Colleoni | [Legacy Archive] | Vetreria Colleoni snc. |
| 041 | Fornasier Luigi | [Consortium Verified] | Snc (2012–2014); Sas (2015); removed after 2015. |
| 042 | Vetreria Artistica La Fenice | [Consortium Verified] | Listed in 2012 only; closed. |
| 043 | Signoretto & Bastianello | [Legacy Archive] | Signoretto & Bastianello srl. |
| 044 | Elite Murano Vetreria Artistica | [Consortium Verified] | Listed in 2012 only. |
| 045 | Nuova P.I.M. sas | [Legacy Archive] | Recovered from Murano Animals Research Team Mapping. |
| 046 | Panizzi Eugenio | [Consortium Verified] | Consistently listed as Panizzi Eugenio snc. |
| 047 | Effetre spa | [Consortium Verified] | Effetre spa. |
| 048 | Idea Murano | [Consortium Verified] | Consistently listed as Idea Murano srl. |
| 049 | Stefano Toso | [Legacy Archive] | Stefano Toso srl. |
| 050 | Eugenio Ferro & C. 1929 | [Consortium Verified] | Consistently listed as Eugenio Ferro & C. 1929 srl. |
| 051 | Aureliano Toso | [Legacy Archive] | Recovered from Murano Animals Research Team Mapping. |
| 052 | Rosis | [Legacy Archive] | Rosis snc. |
| 053 | P.M.G. Fratelli Pitau | [Consortium Verified] | Snc (2012–2016); removed after 2016. |
| 054 | Esperienze di Vismann Sara | [Legacy Archive] | Inactive in modern listings. |
| 055 | Scuola del Vetro Abate Zanetti | [Consortium Verified] | Scuola del Vetro A. Zanetti (2012–2018); Abate Zanetti (2019–2021). |
| 056 | Rossi Rino | [Legacy Archive] | VRM - Valter Rossi Murano. |
| 057 | Simone Giovanni Cenedese | [Consortium Verified] | Consistently listed as Simone Giovanni Cenedese Murano sas. |
| 058 | Eli vetri di Mario Formentello | [Legacy Archive] | Mario Formentello. |
| 059 | Vetreria d'Este Pacifico | [Consortium Verified] | Rebranded as D'Este e Zane Art Glass in 2018. |
| 060 | Ferro Lorenzo | [Consortium Verified] | Consistently listed as Ferro Lorenzo. |
| 061 | La Fornasotta | [Consortium Verified] | La Fornasotta di Urban Gabriele. |
| 062 | Millefiori Factory | [Legacy Archive] | Millefiori Factory. |
| 063 | BP - Barbara Proverbio | [Consortium Verified] | Barbara Proverbio. |
| 064 | Unknown | [True Missing Code] | No concessionaire record exists in any registry. |
| 065 | Esse 2 | [Consortium Verified] | Consistently listed as Esse2 snc / sas. |
| 066 | Unassigned / Unknown | [True Missing Code] | No concessionaire record exists in any registry. |
| 067 | Manuela Zanvettori | [Consortium Verified] | Bijoux (2012–2018); Murano (2019–2025). |
| 068 | Tiozzo Sergio | [Consortium Verified] | Tiozzo Sergio di Claudio Tiozzo (2013–2021). |
| 069 | Unassigned / Unknown | [True Missing Code] | No concessionaire record exists in any registry. |
| 070 | Vetreria Accaeffe | [Consortium Verified] | Listed in 2012 & 2013 only. |
| 071 | Unassigned / Unknown | [True Missing Code] | No concessionaire record exists in any registry. |
| 072 | Componenti Dona | [Legacy Archive] | Componenti Dona. |
| 073 | Polychromy | [Consortium Verified] | Polychromy srl; listed until 2021. |
| 074 | La Fucina del Vetro | [Consortium Verified] | Consistently listed as La Fucina del Vetro srl. |
| 075 | Vetraria Morasso | [Consortium Verified] | Vetreria Morasso. |
| 076 | Art Glass Studio | [Consortium Verified] | Listed 2012–2021; removed after 2021. |
| 077 | MilleVetri Murano | [Legacy Archive] | MilleVetri Murano SRL. |
| 078 | Fratelli Barbini Glass Mirror | [Consortium Verified] | F.lli Barbini Glass Mirror (2012–2016). |
| 079 | Alessandro Tagliapietra | [Consortium Verified] | Consistently listed as Alessandro Tagliapietra. |
| 080 | Striulli A. Vetri d’Arte | [Consortium Verified] | Striulli A. Vetri d'Arte s.a.s. (Alberto Striulli). |
| 081 | Original Murano | [Consortium Verified] | Original Murano di Roberto Guidotti (2012–2018). |
| 082 | Vetreria Pino Signoretto | [Consortium Verified] | Snc (2013–2015); Vetreria Pino Signoretto (2016–2018). |
| 083 | Cesare Sent | [Consortium Verified] | Cesare Sent Snc (2013–2021). |
| 084 | Linea Tagliapietra | [Consortium Verified] | Linea Tagliapietra di Fabio Tagliapietra (2013–2015). |
| 085 | Ragazzi & C. | [Consortium Verified] | Added in 2013; migrated from Code 015. |
| 086 | Arte di Murano | [Consortium Verified] | Arte di Murano srl (2014–2017). |
| 087 | NicolaMoretti | [Consortium Verified] | NicolaMoretti Snc di Alberto e Nicola Moretti (2014–2025). |
| 088 | New Murano Gallery | [Consortium Verified] | New Murano Gallery Production (2014–2025). |
| 089 | L’Antica Perla di Molin Liviana | [Consortium Verified] | Consistently listed as L'Antica Perla di Molin Liviana. |
| 090 | Berengo Studio 1989 | [Consortium Verified] | Berengo Studio 1989 srl (2015–2022). |
| 091 | Massimiliano Schiavon Art Team | [Consortium Verified] | Massimiliano Schiavon Art Team (2016–2021). |
| 092 | Vetreria Badioli | [Consortium Verified] | Consistently listed as Vetreria Badioli di Badioli Francesco. |
| 093 | Costantini Glass Beads | [Consortium Verified] | Costantini Glassbeads di Moretti Alessandro (2016–2025). |
| 094 | Ditta Vianello | [Consortium Verified] | Ditta Vianello Srl (2016–2021). |
| 095 | Vetrate Artistiche Murano | [Consortium Verified] | Vetrate Artistiche Murano di Bullo Stefano. |
| 096 | Wave Murano Glass | [Consortium Verified] | Wave Murano Glass SRL (2017–2025). |
| 097 | AAV Barbini | [Consortium Verified] | AAV Barbini SRL (2017–2025). |
| 098 | Effetre Murano | [Consortium Verified] | Effetre Murano Srl (2019–2025). |
| 099 | Riccardo Todesco LAB | [Consortium Verified] | TMG Murano Glass sas di Sabina Marangon (2022–2025). |
| 100 | Vianello Nadia Murrine | [Consortium Verified] | Vianello Nadia Murrine di Trebbi Davide (2022–2025). |
| 101 | Fornace Mian | [Consortium Verified] | Formerly Formia under Code 037. |
| 102 | Vetreria RCR Murano di Rossetto Fabio | [Consortium Verified] | Vetreria RCR Murano (2023–2024); |
| 103 | Majega Murano | [Consortium Verified] | Registered in 2025. |
5. Collector's Guide: Understanding the Dilemma of Elite Furnaces
A common point of confusion for new collectors is the absence of the trademark sticker on masterworks by elite firms such as Venini, Barovier & Toso, or Carlo Moretti.
This stems from a fundamental structural tension within the district:
- A Geographical Signal, Not a Grade: The VAM trademark is designed as a collective geographical safeguard. It legally certifies that a piece was made on the island of Murano, but it does not grade the quality of the art. A highly expensive, museum-quality sculpture by a master artist and a low-cost, mass-market tourist trinket both receive the identical sticker.
- The Elite Opt-Out: Because world-renowned design houses already possess immense individual brand equity, many choose not to participate in the collective trademark. They rely instead on their own signatures, acid-etched stamps, and independent certificates of origin. They often view the compliance audits, bureaucratic filing requirements, and association fees of the collective mark as redundant or dilutive to their exclusive market positioning.
Therefore, while the VAM label is a bulletproof guarantee of geographic authenticity for licensed workshops, the absence of a sticker does not automatically indicate that a piece is fake. It simply means the piece must be authenticated via secondary forensic methods, such as pontil marks, color gradients, glass weight, or documented catalog matches.
This guide has been prepared by the Murano Animals Research Team to serve as the definitive, corrected reference database for glass collectors and historians.
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