As a collector of t-shirts, I find vintage rock shirts especially appealing. In fact, if I had all of my old metal shirts from high school, I would have a very valuable collection! (Thanks mom). They usually go for big bucks, and if you're lucky, you might even get one without sweat stains! I'm really digging this 1981 Rolling Stones baseball-style jersey that's currently up for bid. Even more so because it includes the ticket stub from the concert as well as a promotional sticker AND two photos from the show. I've never seen the Stones live, but it's definitely on my list!