amcatanzaro

I have a question about my great-grandfather's machine. This was his treadle, he was a professional tailor. It's currently in my grandmother's house, soon to come live with me (as soon as I arrange help). It's badged 31-15, what does the 31 part mean? From the serial number it's a 15 (G4881152). Hopefully a good cleaning and a new belt and I'm in business.
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