http://www.ebay.com/itm/281498774499
This vintage overcoat was made in the 1960s and was sold by Boyd’s. It is a gray/brown wool with a brown velvet collar. Very John Steed.
The coat is single breasted, with a high button stance and fly front. It has a zip-out liner with a General brand zipper.

Chest (pit to pit): 22″ (doubled = 44″)
Shoulder to shoulder: 17″
Sleeve (shoulder to cuff): 24-3/4″
Length (base of collar to hem): 39″