Hi, I was hoping someone would be able to help me identify this disc. I've been using this disc as my distance driver for about a year now. I got it from my brother and he wasn't sure who made it either. I throw RHBH, and as long as I release it correctly she flies straight as can be and then fades to the left. It's 169 grams, and the stamp appears to be something "Grateful Dead" related. Thanks for the help!