So I picked up a Walther PPK/S today in a trade and and Im curious to learn more about it and exactly how much it could be worth, I have the original box and all the paperwork and there is a certificate in the box wrote in French, that says Le Pistolet automatiqoe portant le numero de frabriction 255517, du calibre 9mm a subi, avec succes, I epreuve imposee par le decret 60-12 du 12 Janvier 1960. and is stamped. can anyone tell me what exactly this means is the manufactured date 1960? if anyone can help I would appreciate it, Id like to know what its worth so I can either add it to the collection or see if anyone on here is interested in trading another pistol for it. there is also a little crown looking thing on the right side of the slide, the box says made in France, Interarms. the weapon is in excellent condition I can take pics if anyone is interested in seeing it.