A couple of buttons are missing (under the collar), there was a repair done, and one underarm's seams are loose. See last two photos for repair and underarm. (flat lay) measurements: Underarm to underarm: 21" across (42" around). Shoulder seam to shoulder seam: 19.
Length from back of neck to end of sleeve: 30. Length from back of neck to hem: 46. I'm 5'4 and this coat hits at my lower calf.