[Edward Tinker]

Bob, welcome to the forum!

Let me help a bit, others can chime in.

The 30 Caliber is probably a commercial as you have guessed, but pictures is always helpful.

The few frames that might have been made out of zinc, I believe were made at the end of WW2, so your 1939 is not the right time frame. Also, it is unluckly (impossible comes to mind) that there are going to be found any nickle, chrome or otherwise shiney metal Lugers that was from the factory. Many (many) GI's had their war prizes chromed either in europe or as soon as they came home, and eventually many people have said later they came back this way (true depending on the view). Re-blued or Chromed / Nickled guns drop in value very much...

So, Bob any pictures you can provide would be really good, either scanned in or digital? Try to provide pcitures from top, sides, underneath, etc.

Again, no matter what, you have history in your hands!

Ed