Dating singer featherweight machine
Compare it with the date of the next serial number batch.
This will give you a good indication of when your Singer Featherweight was made.
SLEEK AND shiny with a simple, elegant, and compact design, the Singer 221 - nicknamed "Featherweight" - is the semi-precious jewel of the sewing machine world.
For those who collect toy machines, it's too big, weighing in at 11 lbs 1 oz. For those who collect antiques, it's too new, having been manufactured in the United States between 19 (with the white-colored 221K version made in Britain from 1963-68).
The highest-priced machines are in good condition with little wear on the gold leaf, complete with case, attachments, and original manual.
The predominant finish on the 221 is a shiny black.
A smaller number of machines in other colors exist, including a light tan color produced in Great Britain and a matte black produced in the United States.
The rumored mint-green Featherweight is apparently an alternate description of the white machine, which can have a slightly greenish cast.