Most people have purchased a T-shirt at a concert as a keepsake, but that $20 tee could be worth more than $2,000. Here is a guide to see if you have a fortune in your closet.

Wyco Vintage is one of the most comprehensive places to buy the rarest vintage T-shirts. Their archive of band tees is like walking into a library where T-shirts are sorted by musical artist ...

The band's "Panther" T-shirt sits atop the list as the shirt with the most resale value, with the study noting that purchasing an original version of the shirt can set you back up to $2,750.00.

Check out 10 vintage band T-shirts that we’d love to have in our collection below. Read more: Here are 20 bands from the ’90s you probably forgot about This 2000s Slipknot T-shirt that you ...

We should also note that Icelandic alterna-rocker Bjork scored three t-shirts that landed in the Top 10 for resale value. Her 1995 Post T-shirt was going for $1,895.50, good enough for third on ...