Along with a 1.5amp motor it is the most powerful domestic machine I have come by so far.
I have the original warranty card... it was purchased in 1957 here in Michigan. It came with a nice white oak veneer cabinet.
Although not extremely rare there don't seem to be many around. looking forward to hearing from you about yours.
OK I have to go-on about this machine; because of the powerful motor she is really good at low speeds, great for leather. But its the sound (or lack there-of) that is so wonderful; this machine sounds like no other.