Not a Dash ,, to be seen.If that serial number is K466280 (that's what it looks like to me), then it probably left the factory in 1962. I can't tell from your pictures if there is a screw in the front of the trigger guard. A Model 16 should have one. On the other hand, this still has the right-hand threads on the extractor, so presumably it is a Model 16, not a 16-2.