Photographed collector reference · Case & bottom stamp
1960–1961 · Regular · Bradford — Case & bottom stamp reference (1960–1961)
1960–1961 · Regular · Bradford: Weak stamp, 3 dots left implies 1960-1961. Faint markings cannot support a more precise year attribution. Mark count or dating remains uncertain where the impression is weak.
- Known period
- 1960–1961
- Plant
- Bradford / United States
- Case type
- regular
- 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.
- Year attribution
- collector-attributed
Reference images · real photographed examples
Weak stamp, 3 dots left implies 1960-1961. Faint markings cannot support a more precise year attribution. Mark count or dating remains uncertain where the impression is weak.
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.
Photographic copyright: J. Kim
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.