Interesting little tractor, kinda neat. In my area you can get way more tractor for $1500. If the seller doesn't want you to look at it, ask for a video of it running. Granted it still doesn't compare to hearing/seeing/touching in person. You hear a lot of ebay horror stories of someone traveling half a day to get a shinny vintage tractor they won only to pull into a junk yard looking place and seeing the tractor all beat up, in pieces and in the corner of shed. Then when the seller is confronted they use the excuse their business partner must have posted the picture. If I were you I'd pass. Just seems like some red flags. I looked at an A a year ago. There were decent pictures of it online, and I talked with the guy on the phone who seemed really decent. Of course when I pulled in with the truck and trailer, the guy was no where to be found, the tractor was buried/blocked in, it was not in the condition as the seller mentioned on the phone, I found more blemishes and mechanical issues that weren't visible in the pictures and it wasn't up and running waiting for me as promised. The guy returned my phone call when I was leaving to tell me he was getting his skidloader up the road to push it up on the trailer for me......even though 3 days earlier he said it was turn key ready.
This hobby is supposed to be fun and enjoyable. The B I bought, the gentleman was very happy to see it go to a good home, we talked for over an hour and he walked me around his property and collection. He just didn't want me in and out or a quick sale of the tractor.
I say move on, but that's just me.