Mark variant 1
The two clearly visible block initials P then M are preserved in the source reading direction; no cartouche is visible in the supplied crop.
Low confidence comparison reconstruction.
Maker's mark comparison reference
P M maker's marks
Compare 1 source-linked mark variant recorded under P M. These are reconstructions for comparison, not source photographs or authentication evidence.
- Source date statements
- 1975..1977 · 1955..1975 · 1977..1979
Sources and comparison limits
Maker labels and date or location statements follow the cited source records. Similar names across source collections have not been merged. Compare the photographed mark and the complete object before relying on a resemblance.
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