MEN'S LA CHEMISERIE BY CAHEREL - PRE-OWNED | L OR XL SHORT SLEEVE SHIRT

Shirt is part of a large estate sale / sample sale collection. There are no tags for sizing, and it does state 100% cotton on the inside. I am a large it's much bigger than that so I am guessing large or XL or even XXL. There is a white mark on the inside of the shirt but does not appear on the outside.