Vintage Sag Harbor creme short sleeve sweater. Size M

Cozy and elegant Sag Harbor short sleeve sweater shirt. Ribbed mock neck and sleeves. Very Club Monoco style! There is no tag to indicate size or material. I believe it’s between a Medium and Large but please check the photos that include measurements and I’m happy to measure anything specific and answer any questions I can. Thank you! The color is not white and more cream! I added the last picture to help get an idea of how it looks against my white table cloth