i came across a colt 1911 today. the guys asking $850. it looks to be a military colt but i am having trouble identifying it. the slide is darker than the frame, so assume its newer than the frame. the frame is marked "United States Property" the serial # "14499XX" there is no "No." before the sn# and is does not have "M1911 US Army" stamp as ive seen in pictures, but i they were earlyer models. Any help idendifying would be appreciated! is it a desent price for this gun? is it real or a fake? also everything i read all the colt Sn#'s stop in 1945, is this true? so if i come across a military colt its certain it WWII or earlyer?