This is a gorgeous V-neck sweater from Brooks Brothers.

Made in the USA of a fairly heavy Sea Island cotton, it's dark green.

This beautiful sweater is in absolutely MINT condition.  It's guaranteed to be authentic and perfect.

Marked 42, but definitely measures larger, to an XL. I believe it was originally mistagged as it does not appear to be stretched out at all.

  Across the back, laid flat and unstretched, the sweater measures 26 inches from armpit to armpit, and 31 inches from the collar seam to the bottom of the back. The sleeves measure 38/39 inches from mid-collar to the end of the cuffs.