Bought it new from NMWA. Wore it once. Washed it once. It shrank...
My loss, your gain.
Was size 39. (15 1/2).
Shoulders across back - 16"
Chest pit to pit - 19"
Sleeve shoulder to cuff - 24"
Basically it will fit someone who wears a 36 chest / size small.
Read my review here: https://www.styleforum.net/threads/kent-wang-luca-faloni-g-inglese-polo-shirt-comparison.643583/
Deets from NMWA below. Or see their site here: https://nomanwalksalone.com/light-blue-cotton-pique-long-sleeve-polo-shirts.html
Cotton pique fabric from Tessilmaglia
Small soft spread collar - 3.5cm high, 7cm points
7" placket with two buttons; scalloped hem; sleeve gauntlets without button
Handsewn and shanked mother-of-pearl buttons with "crow foot" stitching; handsewn details on placket and gussets
Made in Ginosa, Italy