Here is an awesome vintage jersey by Southern Athletic. 100% cotton and made in the USA. Red throughout with white Falcons graphic on the front. This looks and feels unworn, and an inspector sticker fell out of it when I was taking pics, so that all but guarantees it. It's on the heavier side, but super soft and comfy, and in great shape with years of life left. The tag says Large, but here are the measurements. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 20"
Shoulder to end of sleeve (including cuff) 19"
Length 29"

This item is sold from a vintage boutique in Roanoke, VA.