I just aquired a Walther P38,have'nt shot it yet but looks to be in pretty good shape and wondering the value of it.This model has the loop for a lanyard and came with 3 mags,I think one mag came with it originally.On the left side of the slide it has markings that says Carl Walther Waffenfabrik Ulm/Do P38 9mm 493 with the serial number a bit lower and on the other side it has 12/61.I'm tapping into the extensive brain trust here for info,thank you in advance for any help you can give me.