Click here for our Birthdate Machines chart indicating level of difficulty to find certain years.
Univega Year Chart Serial Number YouUsing the serial number you can use the three charts below to find the date when your machine was given a batch assignment at the factory.If you do not find your machine serial number listed in any of the three charts, then read through all text and all article links for more references and historical information.Univega Year Chart Series Is NotIf your serial number series is not listed it could mean 1 of 3 things.
Please refer to question 1 on our FAQs page or this article for the notable characteristics of a Featherweight. If the latter 2 of the 3 possibilities, then the two letter prefix can be used to reference the approximate date estimation based on the serial number sequences. Univega Year Chart Serial Numbers Were ReleasedThe date given as a birthdate, however, is simply the day on which vast batches of serial numbers were released to the various factories. The first Featherweights batched in 1933 begin with the two-letter prefix AD. By checking when the next batch was started, its possible to get a fairly accurate date of when any particular machine might have left the assembly line. Featherweights 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. Featherweights having serial numbers that begin with the letter J were mostly made at the St. Singer Featherweights made outside of the US were also given a suffix to their actual model number. Those manufactured in Kilbowie were modeled given the model number 221 K and those manufactured in St. Johns, Quebec, Canada (a few were partially manufactured in Kilbowie and then sent to Canada for finishing) With the exception of motor voltage, belt drive, and some minor cosmetic differences, all 221 models remained fundamentally the same from 1933 through the 1960s. A Featherweight 221 is a 221 is a 221; the suffix does not change or alter the model classification. Moreover, the dash or -1 indication on some years actually remains unknown. The records contained herein is all that Singer provided and Featherweight historians obtained. You can refer to the Featherweight Historical Timeline for more details about those changes. Some of the fine details are officially inconclusive (serial numbers were either misrecorded, applied to the wrong batch or the records were lostdestroyed with the old factories). 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. Sometimes you might find a rogue 221, for example, in a batch of 50,000 99K machines. That simply means that there were some Featherweights within that group of numbers, but it doesnt indicate with which number the group started or ended or how many 221 machines were involved. Graham did not include data on his website for the whitegreen machines or the few Featherweights made in Canada because dating records were apparently too inaccurate to source. For additional reference and a few more dates for those later year machines, however, we have included some of these dating records in the charts above, sourced from JJ Leos Featherweight 221 Factory site as well as singersewinginfo.co.uks site.
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