Welcome bro'.
I think I got you beat though. We have an 820 at the farm that was bought new in 1969 (I think) and it's still working. Great tractor. It's a chugging, tugging son-of-a-gun considering it's size and age. It was always my M-I-L's tractor until she had to quit mowing at 85-years old. I always loved it. For some reason I always felt safer on it when running slopes than on any of the newer, bigger ones.
Stick around and post often.