Sig fans, here you go. 

All numbers matching (barrel, frame, and slide) P220 2-tone, black and satin nickle, .45 ACP.  Made in West Germany, 1989 according to serial number and proof marks.  If your Sig doesn't have German proof marks, it's not a German gun.

It's shows some wear on the barrel because it's been shot, just the surface finsh, rifling still looks sharp and new.  It's a joy to shoot!  The cleanest breaking factory trigger and most accurate 45 you'll have ever shot.  Research it on the internet. 

The German made Sigs were put together by true craftsmen, with parts made in house, and in much lower numbers than the current assembly line stuff currently made in the US with parts from all over.

When looking for comparables, make sure it's a actual West German Sig, and 2 tone satin stainless.  There were some with just the frame made in Germany before they were full US made.  You might find one close to this price, but not without the paperwork, taxes, and transfer fee.  

Comes with one 8 round factory nickle mag, 2 black 8 round aftermarket mags, one 10 round aftermarket mag, and plastic case.

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https://www.realgunreviews.com/sig-sauer-proof-marks-date-codes/