New Without Tags Brooks Brothers White Supima Cotton Oxford Cloth Button Down Shirt. Made in USA.  Size 16-34 Milano, which is Extra Slim Fit.  Measures approximately 21.75 inches across chest at armpit level. Retail $140. 

This is a recent model, featuring an unlined collar, darted back, and mother of pearl buttons.

Spot on low front pictured.

I combine shipping.