Vintage Big Smith XL? Chambray Long Sleeve Shirt Pearl Snap Front Pockets Blue

This is a vintage shirt that is in good pre-owned condition, but does have a few flaws: 1. There are a couple of minor stains (as indicated in the images) 2. The stitching on the left breast pocket is loose (as indicated in the images) The "wear" definitely adds to the character. Also, the size tag is missing, but based on measurements, I'm estimating this as a men's XL. Armpit to armpit = 25" Length = 30" Arm Length: 24.75