Given the length of production from 1912 through to the 1950s, there have been a good few variants. We have both USA and UK made razors, they came in two combs, the wide comb and the rounded comb (post-1930 US only) and they came with two heights of head, one "regular" and a squat model. Earlier models got a curved cap, later (post-1919?) got a flat top cap. The backs usually said "Ever-Ready" if American of "Made in England" if British (although I think one factory was indeed over the border in Scotland) < ping
@Fergiebilly
Value is pretty much of a muchness for 1912s. Anything from a fiver to fifty quid, depending upon the model, case and condition. It's the Sun Ray model that catches the big money. That, and the Steamline < although not a 1912 model. The original Damaskeene model (the actual 1912) does command a little more. If it doesn't say "Use Damaskeene Blades" on the baseplate, it's technically a "1919" but we call them 1912s nevertheless, in reference to the original patent date of the Damaskeene. Confused?
To answer you directly, yes, it's a mongrel ... but loveable, nevertheless.
Yours is a post-1930 model. Look at the comb and see the corners are rounded. Compare that to pictures of other 1912s. You have the later model there. The British 1912 will have the wider comb and be right at home in that box.