Illustrated historical reference · Case & bottom stamp
1967 · Slim · variant 3 — Case & bottom stamp reference (1967)
From August 1967 the patent number is omitted. A canned bottom appears from late 1967, with two canned-bottom versions documented.
- Known period
- 1967
- Case type
- slim
Reference images
Evidence, source and dating limits
Sources: Moonlight Zippo — Historical bottom-stamp variants, Slim dating chronology, and Canadian bottom/insert period references
Dating caution. Case and insert can have different manufacture dates; inserts may have been replaced. A single feature does not establish authenticity.