New without tags Brooks Brothers Blue University Stripe Supima Cotton Oxford Cloth Original Polo Shirt.  Button Down Collar, unlined collar, mother of pearl buttons, side seam gussets.  Classic shirt.  Some have Sharpie marked neck labels, some don't.  That mark washes out eventually, quicker if you use stain treatment.  Some have the hang tag, some don't.  MSRP $140.

Approximate measurement across chest at armpit level by neck size:

14.5    22.5 inches

15       23.5

15.5    24

16       25

16.5    26

17       26.5

17.5    27.5

18       28.5

18.5    30

19       31

I combine shipping.