Independent counterfeit comparison · J. Kim

Counterfeit Zippo bottom-stamp references

These 21 collector-documented photographs are explicitly separated from genuine Zippo dating records. The years shown refer to claimed date markings or worksheet attribution, NOT independently proven manufacture dates. A matching appearance is not a definitive authenticity test.

Source: J. Kim · Photo copyright: © J. Kim.

Look for impossible date letters, unusual stamp geometry or atypical lettering, but remember that genuine examples can have weak strikes, transitional markings or repaired parts. Use multiple independent features.