Steve said:
"The set would have had a 45 or 50w transformer..."
My 25225 set came with a 50w transformer with "Model 729" stamped on it. A picture of it:
FWIW: There's a couple of No. 729 transformers on the Bay right now, one seems a bit rough, and it's waaay over priced (to me) the other looks to be in better shape and is more reasonably priced, but notes "cord cut".
"...but the 1033 is a super transformer."
I just received mine a few days ago. It does seem to be perfect for light duty and/or the workbench. That's the realm mine will be used in. Enjoy!
Andre