Very cool. Thanks for all that info!

Here’s some additional photos.

I have two of these both brand new sealed in plastic bags but opened one to see the full shirt. No idea what contest it was but inside the packaging was paper that said

Congratulations!
You're a winner in the
"Round Up the Brands of Restaura" contest.
You've won an "I've Been Branded" T-Shirt ...

Pretty cool tee. No idea what the value would be on something like this. Any help is much appreciated!