Wow - cool to see this thread back up. It sure brings back one of the best memories of my life.
Aaron, no, I never did get any info back on the collar although I did email requesting it a couple of times. I do think she was a pretty old girl though. Generally bison meat is thought to be excellent, but this one gave my teeth a workout. The back straps were fine, but I tried everything I could think of to make tender steaks without much success. Roasts in a slow cooker all day were good, but the majority of the meat was either canned or ground into burger, which was excellent.
I'm looking at the euro mount of her right now.