Photographed collector reference · Case & bottom stamp
1968 · Regular · Bradford — Case & bottom stamp reference (1968)
Zippo · 1968: Original photograph supplied by Terry Lyons of a 1968 Bradford-made regular-size Zippo bottom stamp (3 left / 3 right vertical bars). Compare the entire stamp, including registered mark, patent wording and the position of each impressed mark; wear, reflections and shallow strikes can hide individual marks. The photographed case is a collector reference, not factory provenance.
- Known period
- 1968
- 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
- Photographed specimen; visual features documented, precise production date and authenticity not automatically verified.
Reference images · real photographed examples
Historical variants and original source records
Independent sources and distinct stamp layouts are preserved as individual photographs, not additional main cards. A pictured example alone cannot establish that every lighter from the year used the same construction.
- 1968 · Regular · Bradford — Zippo · 1968
- 1968 · Regular · Bradford — 1968 · Regular · Bradford
- 1968 · Regular · Bradford — 1968 · Regular · Bradford
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; Terry Lyons; J. Kim
Supporting comparison: A useful illustrated or photographed comparison. The feature alone does not establish a unique production date.
Reference verification: Photographed specimen; visual features documented, precise production date and authenticity not automatically verified.
Photographic copyright: Credited individually below each photograph
Dating caution. Case and insert can have different manufacture dates; inserts may have been replaced. A single feature does not establish authenticity.