I've got to disagree with RMD on this one. A dealer selling a freshly-painted blue tractor (that can be seen to have been originally painted red), with "2000" decals on it, is about as blatant a misrepresentation (read that "rip-off") as you can get. "Pretty much the same" ain't nearly close enough, when 10 minutes on the internet will give any dealer enough info. to at least get in the ballpark as to model. I can't comment on values in Gary's area, but it sure looks like a dealer wouldn't go to all the trouble to clean, paint, and paste on stickers, unless there was a "return" in doing so for him. If I were you Gary, I'd do a lot of research and find out exactly what I had. You may find the same dealer has altered or obscured the serial number, attached later-model parts that will fit, and has done other things to try and deceive a new tractor buyer. It's a sad fact that you need to know exactly what you're considering buying, and know it well enough to see through the kind of deceptions that seem to be the case with your tractor. I'm a John Deere enthusiast, and it's gotten so bad on the green-and-yellow side of the hobby that show exhibitors with rare or historic models have to literally guard the serial number plates on their tractors to keep theives from stealing them, to attach to ordinary tractors. Fortunately for you, if the dealer has cheated you, he makes a pretty good, stationary target for some hungry lawyer to take a bite out of, on your behalf. Good luck !
In any case, no matter if its a 600 or 2000 series, if the tractor is good mechanically, you have a great, serviceable tractor.
: First off, did you buy manuals for a 4-cyl (1962-1964) 2000 or a 3-cyl (1965 and later) 2000? From what you describe, it won't be anything like the 3-cyl, but should be similar to the 4-cyl 2000.
: If it has a spot for a round emblem top center on the grill, it is likly a 600 series (or maybe a 800 series). The 4-cyl 2000 had a different grill with no round emblem, just a semi-circular screen at the front end of the hood acess panel.
: Look for model and serial numbers stamped into a horizontal spot on the casting immediately rear of the starter on the left side. The IT shop manual (for NAA/600/800) has the codes to deceipher the model number.
: What kind of dealer was it? A Ford/New Holland dealer should have known what it was. Did you get ripped off? If you thought you were buying a fairly modern 3-cyl 2000, maybe (although you could have told the difference by counting spark plugs). If you have a halfway modern 600 instead of a 4-cyl 2000, well, there realy isn't much difference between the two.