Photographed collector reference · Case & bottom stamp
1957 · Slim · Bradford — Case & bottom stamp reference (1957)
1957 · Slim · Bradford · Style 1: J. Kim notes that early Slim dot patterns differ from those on regular cases. Uncoded 1956 examples are discussed by collectors, but the evidence is limited; the documented 1957 layout should not be used alone to infer a 1956 manufacture date. 1957 · Slim · Bradford · Style 1.2: Another example of a faintly struck bottom stamp.
- Known period
- 1957
- Plant
- Bradford / United States
- Case type
- slim
- Dating evidence
- Collector-reported reference — A collector or source has documented this example or attribution. The exact year, manufacturing history or classification may not have been independently verified.
- Reference verification
- Photographed specimen; date or classification attributed to the source, not factory-certified.
- Source attribution note
- photographed specimen — collector-supplied classification
Reference images · real photographed examples

J. Kim notes that early Slim dot patterns differ from those on regular cases. Uncoded 1956 examples are discussed by collectors, but the evidence is limited; the documented 1957 layout should not be used alone to infer a 1956 manufacture date.

Another example of a faintly struck bottom stamp.
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.
- 1957 · Slim · Bradford — 1957 · Slim · Bradford · Style 1.2
Dating evidence and reference verification
Sources: J. Kim
Collector-reported reference: A collector or source has documented this example or attribution. The exact year, manufacturing history or classification may not have been independently verified.
Reference verification: Photographed specimen; date or classification attributed to the source, not factory-certified.
Source attribution: photographed specimen — collector-supplied classification
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.