Jack Wills Blazer Mens Size 42R Large Fox Tweed Wool Hacking Jacket Country

In great lightly used condition.
Size states XL but fits like a 42R or a medium. 

Measurements in the photos are in inches. 
First photo with measuring stick: Pit to pit
Second photo with measuring stick: Shoulder to hem
Third photo: Shoulder to cuff
Fourth Photo: Shoulder to shoulder
Please compare the measurements with a garment you already own to ensure fit.