I could be an old hendy or a very early KT. It probably uses Brown And Sharpe tapper, tooling. To be on the safe side I could plan on weight to be more on the 2500 tp 3000. It's actual value will be set by the auction, in the heat of the moment. If you try to resell it, the value may be less. In terms of production, it is not a big $ maker. Old machines are massive in comparison to their work envelope. As long as it is not worn out, they can do some very good work. Even a worn out machine can do some very good work once you know the quirks and how to work around them. When I was new to machine work I had a lot of trouble wrapping my mind around a horizontal machine for lay out and operations, vertical machines make a lot more sense to me. Now I think a horizontal machine gives more options for serious metal removal.
It will be fun to see where you go from here, please keep us posted.
Tim