

Graham Forsdyke worked with the Singer Company directly to remove some of the errors and fix the anomalies in the old chart records, but some have still been found, especially in the post-ET serial number sequences. Some of the fine details are officially inconclusive (serial numbers were either misrecorded, applied to the wrong batch or the records were lost/destroyed with the old factories). ※ The dates provided cannot be guaranteed, of course, but are probably as good as we will ever find. A few Singer Featherweights were included in this series.

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**Singer Sewing Machine models within this JE batch of serial numbers were made in 1961. Singer Featherweight White 221K / Tan 221J Machines (Additional Information) *Singer Sewing Machine models within this batch of serial numbers have no further historical records, but can only been verified by year based on data provided by Featherweight owners and caveat #2 & #3 at the top of this page.
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Singer Featherweight 221 Machines (Black) Prefix Series You can refer to the Featherweight Historical Timeline for more details about those changes. The records contained herein is all that Singer provided and Featherweight historians obtained. Moreover, the dash or "-1" indication on some years actually remains unknown. A Featherweight 221 is a 221 is a 221 the suffix does not change or alter the model classification. With the exception of motor voltage, belt drive, and some minor cosmetic differences, all 221 models remained fundamentally the same from 1933 through the 1960's. Models 221K = manufactured in Kilbowie, Scotland, United Kingdom Models 221 (or 221-1) = manufactured in Elizabethport, New Jersey, USA (a few were partially manufactured in Kilbowie and then sent to Canada for finishing) Serial Number prefixes beginning with letter 'J' = manufactured in St. Serial Number prefixes beginning with letter 'E' = manufactured in Kilbowie, Scotland, United Kingdom Serial Number prefixes beginning with letter 'A' = manufactured in Elizabethport, New Jersey, USA John's were given the model number 221 J.ĪD = prefix of serial numbers assigned to the first Featherweights manufactured, beginning in 1933 Those manufactured in Kilbowie were modeled given the model number 221 K and those manufactured in St. Singer Featherweights made outside of the US were also given a suffix to their actual model number. Featherweights having serial numbers that begin with the letter 'J' were mostly made at the St. By checking when the next batch was started, it's possible to get a fairly accurate date of when any particular machine might have left the assembly line.įeatherweights having serial numbers that begin with the prefix letter 'A' were made in Elizabethport, New Jersey, whereas those that begin with the prefix letter 'E' were manufactured in Kilbowie, Scotland. The first Featherweights batched in 1933 begin with the two-letter prefix 'AD'. The dates given below are the days on which those batches were started, together with the number of machines in each consignment.
