Your French made "Bargeon, Inox", shell puller knife shown is a recent version made in the 1960's to 1970's. The shell puller type knives are as old as the cartridge itself and date to the 19th century. The 1912 August Stukenbrok catalog shows two types of shell puller knives made by J. Albert Schmidt. The 1st type is the "bolster" type. The 2nd type is the "curved blade with small hole" type. Another type offer by Friedr. Herder Abr. Sohn is a "Tweezer" type.