Hello Gunny and welcome to the GunBoards forums. Due to the small amount of Colt M1909 New Service revolvers that were contracted for and property marked USMC I think you did very well. You got a nice piece of Marine history which you'll be able to enjoy and will only appreciate in value. Have it cleaned and inspected by a good gunsmith familiar with Colt revolver and then enjoy shooting it. I have 2 Colt New Service revolvers that are very nice shooters.
I'm a political refugee from the Peoples Republic of Massachusetts