I think zipper feet are sold by whether the machine is high shank, low shank, slant shank, etc. Janey can probably tell by looking at your photo which one you have. She will be along. It may be Monday before she checks in.
You might be able to tell by looking up the definition of the low/high shank online.
All I can tell you for sure is that it's not a slant shank, as only Singer made those.
bkay