New Without Tags Brooks Brothers Gray Supima Cotton Oxford Cloth Button Down Shirt. Made in USA.  Size 15-33 Milano, which is Extra Slim Fit.  Measures approximately 20 inches across chest at armpit level.  Retail $140. 

This is a recent model, featuring an unlined collar, no chest pocket, box pleat, mother of pearl buttons, and side seam gussets.  Supima is a long staple cotton grown only in the US.

I combine shipping.