I took a picture of the Eagle and now I know my eyes are not what they used to be.

I can see the top of a wreath under the Eagle and remnents of a top of a swastika. I now think this is proof #146 shown on page 108 of CONSTANZO'S proof book and it says:
1934 Training proof used on weapons for field exercises. Always found on DWM or Erfurts [no mention of MAUSER] Lugers with or without chamber dates. It fits the Kdate time frame (1934) but on a Mauser Luger. Here are three pictures. Both barrel eagles look like a double stamp.