That is a great well built excellent machine. We had some of those Lincolns at the power house and one similar to that in the shop were we could do aluminium TIG
Ive seen a few for sale and they are good bargains. Id take one anyway over the newer machines.
Quick story, we had a IdealArc at what we called the "oil farm". It was a small masonry building and outside area that housed oil heaters and pumps that took #6 Bunker C from a million gallon storage tank and pumped into the power house for fuel for boilers
There was old Lincoln, outdoors, beat to ****, covered in #6. It was the type of machine that had a big crank handle that you raised and lowered amps. A rising core transformer type I think it was called
The machine welded excellent, being that it was mostly pipe work, this rusted out old welder ran 7018 great..... Nothing could kill this machine until one day there was a North easter that rose the river water over the dock (salt water ) and flooded the oil farm in a few feet of water
We gave the Lincoln a proper burial after that day LOL