1938–1941 · Regular · Bradford — Case & bottom stamp reference (1938–1941)

Reference images

Dating evidence and reference verification

Sources: In Quiet Detail — Primary photographic and collector reference archive; Moonlight Zippo — Historical bottom-stamp variants, Slim dating chronology, and Canadian bottom/insert period references

Supporting comparison: A useful illustrated or photographed comparison. The feature alone does not establish a unique production date.

Reference verification: Historical illustration or documented comparison; not an independently authenticated specimen photograph.

Dating caution. This is a documented period reference, not proof of a precise manufacturing year. Case and insert can have different manufacture dates; inserts may have been replaced. A single feature does not establish authenticity.

Year lookup

• Zippo 1938: year reference
• Zippo 1939: year reference
• Zippo 1940: year reference
• Zippo 1941: year reference