New Without Tags Brooks Brothers Blue Supima Cotton Oxford Cloth Button Down Original Polo Shirt. Made in USA.  Some have the hang tag that is pictured, some don't.  Some have a marked neck label, some don't.  Retail $140. 

This is a recent model, featuring an unlined collar, no chest pocket, mother of pearl buttons, and side seam gussets.  Some of these have a box pleat and some are darted.  If this is an important issue message me before buying and ask if the type that you prefer is available.  The Brooks Brothers Original Polo Shirt is an iconic Trad / Ivy League style item.

Milano Fit, which is extra slim.  Approximate measurement across chest at armpit level by neck size:

14.5  19.25

15      20

15.5   21

16      21.75

16.5   22.5

17      23

I combine shipping.