Remington Rand 1911 1942

I just got this 1911 and I’ve been searching all over the internet for information on it. But that only seems to get you so far so much conflicting info. It’s supposed to be a type one slide but it has a type 3 (sadly enough). The rest seems to be original correct me if I’m wrong. This gun by what I was told by my lgs is it was sold to them by the son of a guy that passed away and he wanted nothing to do with guns. It came with a 1944 boyt holster that it looks to me this gun got put in 70 years ago and just recently pulled back out of. Let me know what you guys can see and tell me about this gun. Thanks!!!