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Maker's mark comparison reference

F D maker's marks

Compare 2 source-linked mark variants recorded under F D. These are reconstructions for comparison, not source photographs or authentication evidence.

Source date statements
1919..1921 · 1881 · 1928..1950 · 1941

Mark variant 1

F D: Unfilled graphite-gray contour reconstruction of the irregular oval plaque with supported F/D-like forms and central separator, preservin…; line reconstruction.
Line reconstruction
F D: Unfilled graphite-gray contour reconstruction of the irregular oval plaque with supported F/D-like forms and central separator, preservin…; oxidized reconstruction.
AI-assisted oxidized reconstruction

Unfilled graphite-gray contour reconstruction of the irregular oval plaque with supported F/D-like forms and central separator, preserving the source arrangement.

Low confidence comparison reconstruction.

Mark variant 2

F D: Sparse F, central dot, and D arrangement retained from the source; line reconstruction.
Line reconstruction
F D: Sparse F, central dot, and D arrangement retained from the source; oxidized reconstruction.
AI-assisted oxidized reconstruction

Sparse F, central dot, and D arrangement retained from the source.

Low confidence comparison reconstruction.

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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