Im not sure there is any standard guide, and I also dont think the serial number range impacts value to much. I think mine is lower than that, but it is a REAL mixmaster as it was just a lowely reciever when I got it and I built it for a shooter. The early Winnies were spring tubes.
I would look at the onese that have sold on GB, with a specific eye to the features and condition. If I had to peg it, if its a mixmaster with typical late features I would say $700 to $800.
