Colt model 1911 A1 45 automatic. Frame stamped GHD on left side with a P next to the magazine release. Bore has strong lands and grooves. Slide stamped Colts PT.FA MFG. Hartford CT.USA also has all the patented dates. Frame stampings are very pronounced, slide stampings are readable but less pronounced. I am sure this 81 year old colt was re arsenaled at some point. Magazine is unmarked.