Vintage Made in Canada (The tag is very old and very washed out) John W Nordstrom Loro Piana Wool Supper 110s' Sport Coat Grey Two Button Blazer Note the size tag is washed but a 25 Armpit to Armpit Measurement is equivalent to a 2X Size or 50 to 52 R. 
Please compare the below measurements to your own garments for the perfect fit ! 
Measurement Approx. Lying Flat 

Armpit to Armpit 25" 

Shoulder to Hem 33" 

Sleeve 24" 

Shoulder to Shoulder 21 

Sleeve Hem 1.5"