Now there is a hard pump to find. I know of one I have been trying to secure for years but I'm still waiting on it coming available. One sold at Morphy's last year around this time. It went for $15,860 and I bid up until about 12,500 or so.
Good luck on the 850 quest. They are really cool pumps.
Done up right they can be gorgeous pumps. Here's one I have put my name on but there are a few people hoping to get a crack at at this one if it ever comes available for sale. Nicest one I have ever seen.
I would like to thank everyone for their messages and was able to get an 850. I had picked up a Milwaukee 860 over the weekend and now fortunate to have its big brother!! Two very cool pumps. Now I guess I need an 870 for the set!