Geoff, unless I miss my guess - I know the seller of this truck. R. Hanmore may be able...
... to tell you how rare it is. I can't do 'that'.If you saw this on ebay, it was probably posted on a site called 'Fredericksburg Collectibles'. David Hosley runs the site...and he also sells here on D4C once in a while.
I've dealt with Mr. Hosley a TON over the past years. You won't come across a more honest, straight-shooter ANYWHERE.You can have doubts about how rare the truck is; but, have NO doubt about the seller telling you the truth as best as he knows it.