Vintage Mink Fur Coat

A vintage fur coat (I believe US size 14) that I have been told is mink. The fur is a very dark brown -almost black in some lighting- and the inside lining is of a purple hue. The coat has 4 buttons that tie into loops and 1 pocket on either side. The stitching looks good. I also took the following measurements: Neck to Cuff: 28" Back: 15' Bust: 18.5" Neck to bottom: 42"