It is a model XXX, or 30
There was a canister known as the Hercules, but I don't think it was sold in the U.S. If it says Hercules but looks like the one in the pic, it is probably a modified prop or something used by a company that marked it as theirs such as the "Jurisko" on eBay. They were sold from 1937 to the early 50s(I don't remember the exact end date). More pics would help date it. Here is mine. Mine does not have the caddy but has the cord winder.
~K
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