I thought there was someone on this site that could tell you what year your sewing machine was made. I have a Kenmore made in Taiwan serial 004o466 model 12813360 I think its between 30-35 years old.
There was but I haven't seen her post in a long time. She posted as DamascusAnnie.
I think Annie posted about old Singers. Featherweights are listed by serial number and it shows when and where manufactured. I have that web site. I don't know if the same thing applies to Kenmore.