Guys, I love it ! & I got some ???

Got my first P.08 'bout twenty minutes ago via UPS. It is a 1939 42 coded piece with 70% + bluing. It is a total mismatch (the "action" is serial#45 and the frame components are "5987") but the chamber and mag base are both stamped with the eagle/63 waffenampt - which brings me to my first question : on the right side of the chamber are the two eagle/63 waffs (the second slightly smaller than the first) but there are two other non-Nazi eagles to the right of the waffs. One of these eagles is on the chamber, the second on the barrel. I think I've seen these proofs on a bud's .22 Erfurt - are they West German proofs ? The backstrap is marked "12." ? Are these black plastic grips original for a 1939 chamber date ? God ! I wish these things were as cheap as my beloved Mauser rifles !