Vintage Luckymates by Serbin of Florida Blazer

Vintage Luckymates by Serbin of Florida Blazer. No size tag. Fits Small or Medium. Blue with white diamond allover pattern. Has 3 button from closure. Patch pockets at front hips. Double vent in back. There is a small stain on the front-please see pics. I have not tried cleaning. Fabric has some stretch. No fabric tag. Adorable little piece of the past!