These I believe might be Manufrance in-house proof stamps (from pre-1924?). The last crossed plume or crossed feather or crossed palm looks more fluffy. You'll note five on the barrel flats, two Saint-Etienne proofs on the barrel.
https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=597374&page=6

[Linked Image from i.imgur.com]

FAB500 advised that the above gun was made pre WWI . .but had the lighting bolt stamp for in-house proof begun in Summer 1924 for some reason.
https://www.doublegunshop.com/forum...Main=39635&Number=595336#Post595336?

Translation of Fab's above comments on MF proof stamps!

(Manufrance) lightening bolt stamp on the barrels and on the action - appeared as a Saint-Etienne proof stamp on 18 March 1924, to designate an arm proofed in the state of delivery. . .

From 1926 MF no longer used the Saint-Etienne proof house; They proofed their arms internally. The "Crowned PT" stamp, as well as the "foudre" stamp replaced them (Saint-Étienne proof house stamps) (see photo).

This information comes from this book:
https://www.lamanu-armes-edition.com/

Last edited by Argo44; 01/15/25 02:07 PM.
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