VINTAGE 40’s 50’s BLACK FUR COAT WITH MINK COLLAR

I never know what the black fur actually is - if you know please tell me and I’ll post it correctly. I’m pretty sure the collar is mink. Nothing wrong with the coat - only a couple of wear spots- one on the collar ther you don’t see when it lays flat and the other one is at the pocket. Also the very top button at the neck is missing. No tears in the coat and lining is good. Please note this is a vintage item. Shoulders approx 21” sleeve approx 23” pit to pit 21” length approx 36.5”