Just joined today and saw this thread on 1911s with the Swartz safety. Field stripped mine and the barrel is marked with a large "G" immediately north of the link and "Colt 45 Auto" immediately east of the link. Great piece of Colt history. Gary
Is your gun a National Match?
Does your barrel have any markings on the lower left of the chamber? Is the number C184667 or C194667? I assume the latter but can't quite make it out in the picture.
Kevin, my gun is numbered C194667. The barrel is a match type. I've long been meaning to take better photos and describe the markings for you, and will do so as soon as I get back to Los Angeles. Meanwhile, your database might benefit from recording another pre-war NM on one of the auction sites that clearly shows this information.