Specs are about right, I dug it out, had to clean up the brass name plate. "Independent Pneumatic Tool Co" with a list of cities where it could be repaired. On the body is cast "Thor" lol, which should give anyone you used it a clue right up front.
Also found my late '60's 7 1/4" Skil Saw 1 3/4 HP all metal, cleaned it up, now to find some blades I bought a couple years ago.
Amazing how time flies.