This is a gorgeous shirt from Ermenegildo Zegna.

Made in Italy of 100% cotton in a light flannel weight, it's chartreuse green.

The shirt has a straight collar, single-button cuffs, a left chest pocket, and a square tail with side vents.

This shirt is in PRISTINE, MINT condition. It is guaranteed to be authentic and absolutely perfect. 

Marked M.

The neck measures 15.5 inches from button to buttonhole.

 The sleeve length is 35/36 inches from mid-collar to the end of the cuff. 

Across the back, laid flat, the shirt measures 24 inches armpit to armpit and 32 inches from the collar seam to the bottom of the back tail.