That looks like the German version of the Singer 404. Is it a 404G? If so, it’s not very common in my neck of the woods. It appears to have the knock-outs for a treadle belt application, and the bobbin winder is on top instead of on the side.
Great catch!
PS-I would trade you, but my photo is of my Grandmother's second machine out of only two in her lifetime. I can't trade this one!
CD in Oklahoma
Common Singer 404
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