Illustrated historical reference · Case & bottom stamp
1997 · Regular · Bradford · Anniversary — Case & bottom stamp reference (1997)
1997 · Anniversary: Special or commemorative stamp. Compare the full layout and use the insert as a second check.
- Known period
- 1997
- Plant
- Bradford / United States
- Case type
- regular
- Dating evidence
- 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.
Reference images
Dating evidence and reference verification
Sources: In Quiet Detail — Primary photographic and collector reference archive; Glen's Zippo Page — Historical bottom-stamp, case/insert construction details, Canadian dating chronology, and transition research; 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. Case and insert can have different manufacture dates; inserts may have been replaced. A single feature does not establish authenticity.