Vintage Hercules Ringer T Shirt by Signal

Here is an awesome vintage T-shirt from 1970s by Signal. 65% polyester, 20% cotton, and 15% rayon. Light blue and white marbled shirt with dark blue accents. Sweet graphic on the left breast, repping the now defunct Hercules powder company in Wilmington, DE. This one feels like it's never been worn! It's in amazing, like new condition with tons of life left. The tag says M (38-40), but here are the measurements taken laying flat. Please refer to the last pic to see how I measure shirts. 

Chest (armpit to armpit) 17"

Shoulder to end of sleeve (including cuff) 8"

Length 29"