Hi Cal,
Sorry I didn't respond sooner. I just got home from visiting my daughter and family in Virginia. They just bought theur 1st home there and I was helping with the painting and such.
The 1850 I have has 23xx hours that the guy I bought it from say are original....maby, maby not. It has a Year Around cab with heat and air, windshield wiper and radio.  It has dual hydrolics and 3 point with the 3rd link. Front tires are about 90% and rears are about 30 to 40% with road wear. I don't have duals for it, but it has the eye bolts for clamp ons. I just finished putting in a new interior. Power steering and over/under work good. I haven't charged the ac yet this year and I know it needs it. I've owned the tractor for about 1-1/2 years and use it when I make hay on the mower conditioner. (nice to sit in the air conditioning!)
It does smoke some but I haven't noticed it using any oil other than when it's nearing a change, then maby only a quart. 
I hay about 25 acres and always used my 2 770's for most of it, and decided the 1850 takes up too much room in my shop.
Problem is, I've got a tad over $7000.00 in it and wouldn't sell it for less than $7000.00. If that's out of line, I understand and will just keep it.
Anything else you'd like to know, just ask. I'm no whiz on computers but can probably send some pics if you like.
Take care Cal,                                       Larry