Thanks to everyone who offered up some advice on what to be watching for when I went to look at an 861 I was intersted in buying. Long story short I did buy it for $3,000 and will pick it up next weekend. Per the SN it is a "59 and still is a 6 volt system. All guages and lights work, no popping out of gear issues with the tranny, two stage clutch operates fine as does the 3pt lift. Starts right up and runs very smooth. Tin is in pretty good shape with no dents and only minor rust (with exception of a spot on the dog leg. Only possible issue I see at this point is some rusting around the stems on the rims which appears to be just surface rust but the tires are calcium filled so I"m a bit concerned about that. On stem is leaking a little so I"ll have to figure out how to deal with that. All in all pretty excited having this to hay with instead of (or in addition to) my "52 8N which I"ve used for haying for the past dozen years.