SprayNPray: I'm guessing your "No. 1 Supermatic" is actually the type of shutter attached to a Kodak folding camera. You may have a little name plate on the inside of the lens bed (the little door that opens on the front) that tells you what type camera it is. Here's an example:
And here is a close-up of that same lens/shutter, as you see it is also a No. 1 Supermatic, which is the shutter for the Vigilant Six-20:
If these photos resemble your camera at all, then what you've got is a Six-20 camera, which takes 620 type film. 620 is no longer manufactured, but 120 film is the same width and length. The only difference is the spool, and it's easy to re-spool 120 onto 620 spools. See this
very good tutorial.