Street Garms reference tool
Stone Island & C.P. Company ART Checker
Enter a Stone Island or C.P. Company ART number from the garment label to identify supported season, range and broad garment-category information. An ART number is a product reference — it does not prove authenticity.
Stone Island & C.P. Company reference
Decode an ART number
Use the full ART or product reference from the garment's internal care label or original swing tag. ART numbers help identify a model, but cannot authenticate either brand. Eligible Stone Island garments can be checked through Certilogo.
Decoded reference
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- Collection
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- Brand / range
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- Garment type
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- Range code
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How this code was read
For eligible Stone Island pieces from Spring/Summer 2014 onwards, use the official Certilogo service on the Stone Island authenticity page.
Open Certilogo authentication →What an ART number tells you
Supported legacy Stone Island numeric ART codes can indicate a season, range and broad garment category. C.P. Company references and newer Stone Island alphanumeric codes are checked against documented exact matches rather than guessed from the legacy Stone Island format.
Season code
For supported legacy Stone Island codes, the first two digits identify the season and year.
Brand / range
Examples include 15 for Stone Island, 16 for Stone Island Junior and 19 for Shadow Project.
Garment category
The next character gives a broad category such as jacket, knitwear, trousers or sweatshirt.
Where to find the ART number
Look on the internal care/wash label or original swing tag. Older pieces may show the code after “ART.” while many later labels show the code directly.
Use this
ART. 681541023 Product/archive referenceNot this
CLG 123456789012 Certilogo authentication codeLegacy vs newer codes
Stone Island changed its product-code structure from 2025. We only decode newer prefixes that are sufficiently documented, and we show “unknown” rather than guessing when a code falls outside the supported structure.
681541023
Legacy numeric ART
Supported through the classic numeric season/range/category structure.
K1S154…
Newer alphanumeric reference
Limited support for the K1S, K2S, L1S and L2S prefixes currently included in our reference table.
How to look up C.P. Company ART numbers
Enter the complete code printed on the label, including any letters. C.P. Company product references vary between collections and eras, so we show a specific model or season only when it matches a documented archive entry.
For example, 23116474 is recorded as a C.P. Company A/W 1995 buttoned-collar wool sweatshirt. A matching number helps identify the reference, not the authenticity of a physical garment.
ART checker FAQ
Useful context for researching pre-owned Stone Island and C.P. Company with garment reference codes.
Can an ART number authenticate Stone Island?
No. A plausible ART number can help identify what a garment is supposed to be, but it cannot establish that the physical item is genuine. For eligible Stone Island garments, use the official Certilogo authentication service.
Can a C.P. Company ART number prove a jacket is genuine?
No. A documented code can help identify a C.P. Company model or season, but the code could be copied onto another garment. Examine the full item, its labels and construction, and any applicable official authentication options.
What if the checker says part of my code is unknown?
Double-check the label carefully. Some older, special-edition or newer codes can sit outside the commonly documented structure. The checker deliberately avoids filling gaps with guesses.
Does Street Garms use ART numbers when listing products?
Where documented ART information is available, it can help us identify Stone Island or C.P. Company seasons and product models. It remains one reference alongside garment condition, measurements and wider authenticity checks.
What is the difference between ART and CLG?
An ART number is a product/archive reference. A CLG code is part of the Certilogo authentication system. They serve different purposes and should not be used interchangeably.