Unisex kid's Vintage sweater. Size. 7/8

Vintage sweater. This was my brother's from the 80's. Found it cleaning out my mom's old stuff. Tag says size Large. I have a son who wears size 8 and this fits him very well. I would say the size is 7/8. No holes, rips or any stains. 100% Acrylic. Brand is Sheridan Creations Inc. I couldn't find another one online anywhere.