This is a classic overcoat from Maitland.

Made in England of a cashmere-wool blend, it is black.

This coat is in MINT condition. 

Marked 40R. 

It measures 18.5 inches from shoulder seam to shoulder seam, 23 inches armpit to armpit, 35/36 inches from mid-collar to the end of the cuff, and 45 inches from the collar seam to the bottom of the back. (All measurements done across the back with the coat laid flat). 

Please compare my measurements with a coat you have that fits you well.  You will NOT be disappointed.