Mark variant 1

Diamond cartouche and its three centered upright letters are retained in the photographed reading order.
Medium confidence comparison reconstruction.
Maker's mark comparison reference
Compare 1 source-linked mark variant recorded under P B H. These are reconstructions for comparison, not source photographs or authentication evidence.

Diamond cartouche and its three centered upright letters are retained in the photographed reading order.
Medium confidence comparison reconstruction.
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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