How to date Stone Island / C.P. Company (the badge & the art number)

The tells — 7, sourced

1. 01

   THE OSTI BOUNDARY (the family archive's own dates — the house's 'Ann by Ann'): Osti formally exited the company in January 1992 but remained SOLE DESIGNER; his last C.P. Company collection is AW1994 and his last Stone Island collection is SS1995. Everything vintage prices against this line. Paul Harvey's 'Golden Age' runs 1995–2007/08; the design-team era follows; Moncler acquired the house December 2020 (€1.15B valuation).

2. 02

   THE BADGE ERAS: green-edged badge 1982–1999 — it spans the Osti era INTO early Harvey, so green-edge ≠ Osti-only — and a green-edged badge on a post-2000 design is a GUARANTEED fake. Black-edged badge 2000–present. Ghost badges are tone-matched to the garment; Shadow Project badges (2008–, the Errolson Hugh/ACRONYM collaboration) are always all-black with slightly different dimensions.

3. 03

   Badge authentication lore (dealer-guide consensus): genuine = dense wool-like felt, precise embroidery, rich olive green and golden yellow; fakes = flimsy, sparse stitching, dull brown or lemon yellow; post-2000 badge reverse = clean black silk-like backing with the compass points' white stitching visible.

4. 04

   THE ART NUMBER (the wash-tag code): digits 1–2 encode season and year — '12' = Spring/Summer 1990 is the community baseline; digits 3–4 encode the brand (Stone Island and C.P. Company share the system); digit 5 the garment category. From SS2014, CERTILOGO overrides the art number as the primary authentication tool — verify the 12-digit code manually, the QR sticker itself can be faked.

5. 05

   The fabric names date the garment: Tela Stella (1982, the founding truck-tarp canvas), Raso Gommato (1983), Ice Jacket (1987 — liquid-crystal heat-reactive; re-engineered 2010 with polyurethane pigment, so Ice ≠ automatically vintage), Ice Camo (1990), Reflective (1991, glass microspheres); Harvey-era: dyed Kevlar, Pure Metal Shell, Nylon Metal. C.P.'s Mille Miglia goggle jacket = 1988.

6. 06

   The terrace reality: UK casuals demand built the deepest fakes ocean in menswear — cheap 'Stone Island' online is majority fake. Weight the badge lore + art number + Certilogo TOGETHER, and provenance above all on Osti-era claims.

7. 07

   Market honesty: no major auction-house realized prices are documented for vintage SI — the pricing layer is community consensus (green-edge era = the grail lane, Osti-era fabric pieces = the apex). What not to pay for: post-Osti sold as Osti (check the boundary), reissues sold as original fabric-era pieces, and any green-edge badge on a modern silhouette.

Two sources or it ships as rumor. Where a tell is collector-lore rather than a museum fact, the tell says so — weight it with construction and provenance, never alone.

The full dossier