Mark variant 1
Tilted diamond punch with one abstract rounded left device, one compact incomplete angular star-like right cluster, and two faint short intervening strokes.
Low confidence comparison reconstruction.
Maker's mark comparison reference
François-Auguste Boyer-Callot maker's marks
Compare 7 source-linked mark variants recorded under François-Auguste Boyer-Callot. These are reconstructions for comparison, not source photographs or authentication evidence.
Mark variant 2
Single tilted diamond punch with worn B-like left character, C-like right character, a small upper fragment, and an ambiguous central triangular stroke.
Low confidence comparison reconstruction.
Mark variant 3
Horizontal diamond punch with BOURDON, a crown-like device above, and one dot below.
Low confidence comparison reconstruction.
Mark variant 4
Horizontal diamond punch with BOULENGER arcing above one broad crescent.
Low confidence comparison reconstruction.
Mark variant 5
Tilted diamond punch with central fleur-de-lis-like device, B-like left character, F-like right character, and two small lower side fragments.
Low confidence comparison reconstruction.
Mark variant 6
Tilted horizontal diamond punch containing B, a narrow central lozenge-like symbol, and L in left-to-right order.
Low confidence comparison reconstruction.
Mark variant 7
Worn tilted diamond with three restrained interior groups: disconnected left fragments, an incomplete diagonal band, and one open right fragment.
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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