SA Luger

Are you sure that it is .30 cal? Many Finish Lugers were imported to US a few years ago. I suspect that it is 9mm. Many of them have Finish installed 5" bl. You may find crown N proof on left side of receiver. Some still had wood grips with circle cut-out in right grip that once held a brass disk with unit marks. They sold in the $350-$400 range when imported maybe 8 years ago. Go for it!