Not sure of the brand here but excellent quality and fit.  Excellent condition.

Armpit to armpit: 21 inches
Length: 29 inches
Overarm from shoulder to cuff: 26
Underarm from armpit to cuff: 20
Should to should across the back: 18

Thanks for looking and please be sure to check out my other listings! I have a lot of great t-shirts for sale -- buy more and save on shipping!