[NKUSigEp]

I recently traded a vintage Gibson Flying V guitar for some tools and a Walther PPK and have spent a couple hours browsing the net for information on the gun. Basically, I'd like some confirmation from someone smarter than I, on what it actually is.

The previous owner told me that it was an old PPK .380 and not being the avid collector, I assumed he was right. He gave me a few .380 auto rounds and I went home and tried to shoot it. The bullet gets stuck in the chamber. I dislodge it and notice that it's WAY too big for the barrel. So I look at it...it says "caliber 7,65 m/m" which piqued my interest and started this whole goose chase.

And here's what I've got: serial #938***, crown over top of "N" markings, a plastic (bakelite maybe?) grip in a brown/black swirl color, the barrel reads "Waffenbrik, Walther Zella-Mehlis (Thur)", "Walther's Patent Cal 7,65 m/m", "Mod PPK". There are no other markings except a "39" stamped on the inside of the grip when I removed it, on the side near the bottom where the magazine would go. The metal color is hard to describe but appears to be a mirror-finished black or really dark nickel.

I'll post some pics when I can get some decent lighting (it's night-time).