Just bought one. All numbers match, including the barrel. Shot 1" groups at 10yds, which is about as good I can do with anything these days. Slide, frame, and barrel as tight or tighter then my Kimber. Unbelievable! This was someone's baby at some time. She isn't pretty, but she sure can cook. It is my understanding that this is the same as the 1911A1 only manufactured in Argentina under license, utilizing Colt equipment and under Colt supervision. Serial# 77XXX. Can anybody verify this or know anything about these pistols? Has smooth wooden grips with military insignia( Argentine AF?)inlaid in the grip.