Luxury Sneaker Authentication Specialist
Streetwear authentication specialist. Focuses on print quality, tagging, and seasonal production codes.
Published June 2026 · Contact
Why Common Projects Are Faked
Common Projects launched the Achilles in 2004 — a minimalist white low-top sneaker in full-grain Italian leather with no logo, only a gold-foil serial number on the heel. The serial is a short numeric code that includes the size. The Achilles became the defining minimalist sneaker of the 2010s, regularly selling for $400–$500 retail and significantly more on the resale market, making it a consistent fake target.
The Gold Foil Serial
The most famous authentication point is the gold-foil stamp on the lateral heel of the right shoe (typically).
Format: The serial is three groups of digits. A genuine black Achilles Low we have seen (EU 44, US 11) reads "1528 44 7547": a four-digit group, the two-digit EU size, then another four-digit group. We have not confirmed what the first and last groups encode, so treat the layout as a description, not a rule: the size group is the part you can check against the shoe, and a matching layout proves nothing on its own because fakes copy it.
Foil quality: Authentic gold foil is a warm, matte gold — not shiny chrome-gold and not yellow-gold paint. It sits cleanly on the leather with precise edges. On fakes, the foil is often shinier, the font thinner, or the edges ragged.
Font: The font is a specific condensed sans-serif. Numerals are evenly spaced. Fakes frequently use a slightly different condensed font or spacing that deviates from the authentic.
Adhesion: Authentic foil is heat-stamped into the leather — it doesn't scratch off with a fingernail. Fake foil is often applied as a sticker or shallow print and shows edge lifting or scratches off easily.
Correct size code: Verify that the size code in the serial matches the actual shoe. A shoe stamped "42" that fits like a 41 is either mislabeled or a different shoe entirely.
Leather Quality
The Achilles is made in full-grain Italian calfskin leather.
Texture: Full-grain leather has a natural, slightly irregular surface — you can see the pores and subtle grain of the animal hide. It is not smooth plastic-like, not coated, and not embossed. If the leather looks perfect and uniform, it's likely not full-grain.
Toe box: The toe box leather should be structured — the shoe holds its shape when empty. Fakes often use thinner leather that collapses slightly when not worn.
Color consistency: White Achilles should be a clean off-white, not bright white or cream. The color should be consistent from the toe cap through the sides to the heel.
Aging: Genuine calfskin develops a natural patina — slight creasing at the toe box with wear. The creasing follows the leather grain naturally. Fakes crease differently, often more sharply or with the surface material breaking in an unnatural pattern.
Insole Print
The insole of an authentic Common Projects Achilles is stamped or printed "COMMON PROJECTS", with a country line, in the brand's font. The country line is context, not a test, because fakes print one too.
Font: The same condensed sans-serif as the heel stamp. Even spacing between all letters.
Placement: Centered on the insole, readable when you look inside the shoe.
Quality: The printing is clear and does not rub off with handling. Fakes often use printing that fades quickly.
Sole Construction
The Achilles uses a crepe rubber sole in a slightly off-white or natural rubber color.
Sole curvature: The sole has a specific profile — it curves upward slightly at the toe and heel in a way that's consistent with the last (shoe mold) used. Fakes often have soles that are too flat or with a different toe curvature.
Sole color: Natural crepe rubber is a warm off-white or light tan — not bright white. If the sole is brilliant white, it's not authentic crepe rubber.
Sole thickness: Authentic Achilles soles are relatively thin and uniform in thickness across the ball and heel. Very thick soles or uneven thickness are fake tells.
Stitching
The Achilles has visible stitching along the toe cap and around the base of the upper where it meets the sole.
Stitch count: Even and consistent — approximately 5–6 stitches per centimeter.
Thread color: White or off-white thread matching the upper. Bright white thread on a slightly off-white upper is inconsistent.
Toe cap stitching: The toe cap's top stitching runs cleanly parallel to the edge of the cap. Any deviation from straight is visible and a fake tell.
Heel Tab
The heel tab is a small loop of leather at the top of the heel.
Proportions: The heel tab on an authentic Achilles is a specific width and height — not too wide, not too thin.
Leather quality: Same full-grain leather as the upper.
Laces and Tongue
Laces: Flat, slightly waxed cotton laces in off-white. Original laces have a metallic tip on each end.
Tongue: Padded tongue in the same leather as the upper. "COMMON PROJECTS" is printed on the tongue facing downward toward the foot.
Quick Authentication Checklist
- Gold foil serial: matte gold tone, three digit groups with the size in the middle, heat-stamped (doesn't scratch off)
- Serial code matches shoe size
- Leather: full-grain calfskin, natural surface texture, not smooth or plastic-like
- Insole print: correct font, even spacing, clear printing
- Sole: off-white natural rubber, correct curvature, uniform thickness
- Stitching: even count, matched thread color
- Tongue label: "COMMON PROJECTS" in correct font
FAQ
What does the Common Projects serial number mean?
The serial is typically three groups of digits: a four-digit group, the two-digit EU size, and another four-digit group. A genuine black Achilles Low we have seen reads "1528 44 7547", EU 44. We have not confirmed what the first and last groups encode, so use the size group as the checkable part and do not treat a plausible-looking number as proof.
Are Common Projects made in Italy?
Common Projects sneakers are made in Italy, and the insole carries a country line. That line is a plain fact about the shoe, not an authenticity test, because fakes copy it. Judge the gold foil serial, the leather, the sole and the stitching instead.
How do I convert Common Projects sizes?
Common Projects uses EU sizing. Their fit runs slightly large — many buyers size down one full size from their typical sneaker size. EU 42 = approximately US 9. Verify fit against the serial size code.
Are high-quality Common Projects fakes convincing?
The gold foil serial is closely replicated on better fakes. The most reliable tell is the leather quality — full-grain Italian calfskin has a surface texture (visible pores, natural grain) that's difficult to replicate in cheaper materials. Handle authentic and fake side-by-side and the difference is immediately apparent.
