Leon beat me, again.
I didn't see many references to 193. I did see a pinterest image for gumtree ad in Australia, but of course it is an old post. It has a different manual cover than is seen at
https://www.singersewinginfo.co.uk/manuals/
Seeing the machine at
https://www.singersewinginfo.co.uk/193/ It looks like it is probably a class 15 machine. The common parts like needles, feet, bobbins and spool pins are probably interchangeable with several other models. Things like nose plate, stitch length assembly and such probably are harder to come by. Without seeing close up of the tension assembly, I can only guess that there probably one that would work, if it was missing.
Janey - Neat people never make the exciting discoveries I do.
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