Well, I contacted the seller, and he graciously sent me more pictures and allowed me to post them here in the Gallery Section. I'll also send them into Tractor Data. They have a Sears Handiman RT listing, but only one picture.
The engine shown is a B&S 23AB... I believe it's 9 hp, but not sure. It's stroke is longer than it's bore so I'll bet it is a torquey little beast. I found a parts manual for it online, and posted it in the Manuals Section
The rear tires were bought new in Spokane, Washington in the 1970's and still have the chalk marks on them. The tractor was put in storage shortly thereafter until the owner's passing this last year...
A neat old machine. This is one I'd love to have to restore and drive in parades, etc.... if I had the time and money.
Edited by Utah Smitty, January 28, 2015 - 11:51 PM.