Size M Vintage 1980s Dee Dee Cotton Short Sleeve Shirt

Vintage 1980s short sleeved shirt in a pale green and white striped medium to heavy weight cotton fabric. Front buttons, patch pocket. Oversized ***There is a tiny mark on inside of back collar (see last photo)*** Label says Dee Dee, 100% Cotton, Made in Canada, Size Medium on tag. Measures 43" around bust, 40" around bottom, length is 26". Fabric does not stretch. Shown on a size small model with 34" bust.