Vintage Kenny Rogers World Tour Short Sleeve T-Shirt

I am selling this red Vintage Kenny Rogers World Tour Short Sleeve T-Shirt. It has graphics on the front and back that are white and black. This tee feels like it's cotton, but it's missing the material tag. This shirt no longer has the size tag, but it seems to fit like a men's size x-large or 2XL. It is in great vintage condition but does have a small mark on the back (pictured). I am assuming the collar was altered at some point, but it does have a seam and looks like it was sewn, so I'm not completely sure if it was altered.