Babyoffive, check your private messages.
I'm not sure what the differences are ore years made, but it could be a New Family, 12 or 12K. Since the serial numbers without an Alpha character or two only have the approximate year it was made, but not where they were made. I doubt that I will ever see one in real life, let alone own one. I just kind of glaze over info for these machines.
Here are a couple of places that tell about them -
https://www.singersewinginfo.co.uk/12
https://ismacs.net/singer_sewing_mac...g-machine.html
Janey - Neat people never make the exciting discoveries I do.
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