On Fri, 26 May 2017 16:28:37 -0400, Leon Fisk
wrote:

On Fri, 26 May 2017 15:40:30 -0400
Leon Fisk wrote:

On Fri, 26 May 2017 13:57:48 -0400
wrote:

snip
Didn't find a serial number yet but spec number is W352-3E9

I couldn't find anything with that number...

From your description it sounds similar to the old "Idealarc" machines.

Try posting a picture of the front if you can't find any model and/or
code numbers. Their website isn't very user friendly without a valid
name or code number to go by...

I came across this old discussion too, you may find it of interest:

http://weldingweb.com/showthread.php...bstone-welders
The case looks like the one on:
http://weldingweb.com/showthread.php...elder-AC-225-s
but with a different faceplate and a lot less cutout at the back.-
also, it has the ac/ds switch top left.