Ultra rare vintage Louisville Cardinals football jersey

very rare vintage champion football jersey I want to say by the tag it's from the 70s maybe early '80s but I'm thinking mid to late '70s by the research I've done it don't have a player's name on it which I like just the number 67 on it the champion tag is embroidered sewn into it it's a beautiful shirt I've worn it it fits kind of like a t-shirt I don't have that bulky shoulder type lay to it or anything like that I've seen like Ohio buckeyes Jersey sale for quite a bit from this era I had nothing to compare it to really all I know is it's an amazing condition and I'm going to say there's not very many out there at all