After the model number. Example - 301A

Cari

interesting that list leaves out Russia , I read there was also a plant in norway.

my very most favorite treadle is early 15 - ? no motor boss. next 15 on the list is elec seem like a 1945 or 54 maybe a 88 or 90 ? has reverse external motor , it was very unused, anyway it has never stalled on a seam, most of my type sewing is heavy thick fabric's

never seen singer list a 15 as an industrial, they did right around the turn of the century start with a 16 industrial, that's is pretty much just a big 15, they use the same bobbin case and bobbin

singer made to many machines to keep up with . I don't even agree with a New family being a 15 model, only thing alike is that the upper tension is on the face plate

My favorite Singer treadle is my 115. She was brought back from being totally frozen with rust to sewing beautifully again. Was in a shed for years and has a huge rust spot near the "S" on the front of the machine, had 2 mud wasp nests in the pillar.

Isn’t it interesting how these machines can be “brought back from the dead” and turned back into good stitchers? Even with her rust spot, I like the looks of her. She has that “been there and done that” look to her.

What do you wind your bobbins on?

CD in Oklahoma

Singer started out like any company - with one plant, and then expanded, and expanded and expanded. It would really be neat to see what the years of production of the different plants were. At least a lot of Singer information is still available.