Manufacture Francaise d Ames et Cycles in St. Etienne was a known producer of "Bulldog Puppy" pocket revolvers. Later known as Manufrance. The Zhuk book has page after page of such things, not even including this exact one.
An engraved one similar to the OP was 13.50 German Marks in the 1911 Alfa catalog. About the same price as a (probably Spanish) knockoff of a .32 S&W and much less than a .25 or .32 auto.
Present dollar value, if you can find somebody paying Curator's figure, sell fast.