I have seen other French buttons with this design.
Antique French Bronze Flower Lady Pendant "Rare"
SUPERBLY CAST ART DECO ANTIQUE FRENCH? BRONZE STATUE FRENCH BULLDOG / BOXER
ANTIQUE FRENCH BRONZE DORÉ FURNITURE FEET MOUNTS SET OF 8 $299US FIRM
Antique French? Bronze Mounted Spelter Vase With Putto 16cm High
Antique French Bronze Kettle Boy Figure.
Antique French Bronze Relief Sculpture “Expos aux Paris 1875” Classical Allegory
