These have been floating around the market for awhile but I finally got around to buying one. Everything is what I expected except for two items. 1st, there is no importers stamp. I took it down and even pulled the grips, no stamp. 2nd, the serial number has not been stamped on the frame. Serial number is on the barrel and slide but I thought to be imported the ser no had to be restamped on the frame itself. This is a late production model, proof stamp is 1981. Think it just slipped through the importer without being restamped?