Excellent job, 45_Auto. I wish I could do it that well. It probably took as long to do that drawing as it would take to make the firing pin.
As others have noted, it is a simple firing pin. The gun is basically a French "Ruby", coming from Hendaye, which is right across the border from Eibar in Spain and part of the same Basque gun-making region. The French guns were usually better made, though and for a while they were imported and sold by Sears and others. The Unique Model 52 was a similar size gun in .22 LR which was sold here for several years.
During the German occupation, Unique made guns for them, though not of the peacetime quality. Those guns have the grip marked "9 Schuss", which means the same as "9 Coups".
Jim