Newly purchased luger I.D help

[stimg367]

Hello everyone, I am new to the forum, and Gladto be here. I have been collecting WW2 for about 10 years now. I recently picked up a 9mm luger and am having some trouble identifying it. I know it's a 34 German contract because its stamped Mauser on top and the safety and the ejector are stamped. It's dated 1939. It's proof markings are not the eagle so it's not a police issue. It's stamped with a pentagon shape with lines going through it, under it is a crown, then a U. I don't think it's a commercial luger cause its dated. I am going to DL some pics if I can figure out how to do so. Thank you in advance for your help.

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