Barrel is marked NM with the assembly number. Bushing is also marked NM & has last 4 of serial number of the original gun hand etched on the side. I am not certain of the vintage, but the Colt forums can probably tell you. I bought it to put on a series 70 slide but the barrel hood is too large. THIS WILL REQUIRE FITTING as NOTHING in a Colt 1911 is "drop in." I am not an armorer, gunsmith, or machinist, however; the barrel hood is not far off on the dimensions for a series 70. Been told by a Colt trained armorer that careful steady filing by hand with a stone will get it where it needs to be (no dremel). Text me for additional photos 3four6-three64-zerozero81. It's got some age, but would make a good vintage build shooter.