Mark variant 1

Diamond outline, three initials, and two separating points are preserved in the same centered horizontal arrangement.
Medium confidence comparison reconstruction.
Maker's mark comparison reference
Compare 1 source-linked mark variant recorded under S S M. These are reconstructions for comparison, not source photographs or authentication evidence.

Diamond outline, three initials, and two separating points are preserved in the same centered horizontal arrangement.
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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