Stumblebum,
You have a 1914/34 transitional Mauser pocket pistol. The pure 1934s have a grip with a more pronounced curve. I think it would be more accurately called an early 34 variation. I can pin down the year of manufacture but you will have to provide me with the complete serial number for my research. You can send it to me via e-mail if you don't want to post it here. It is a less common variation. The markings you mentioned are most likely proof markings, A Crown/U, and not waffenamts which are military markings.
Regards,