What is the Birthdate of My Singer Featherweight?
To date your Singer Featherweight, you will need to locate the serial number on the bottom of your machine. It has two letters followed by a series of six numbers. Using the serial number you can use the threecharts 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 below, then read through all text and all article links for more references and historical information.
Most serial numbers are found on the bottom of a Featherweight next to the bottom tray (left photo), but a few of the early AD models are found
inside & underneath the bottom tray (right photo).
For sake of easy reference, only the serial numbers that correlate to Singer Featherweights are included in the three charts below. If your serial number series is not listed it could mean 1 of 3 things:
- Your machine is actually not a Singer Featherweight model. Please refer to question #1 on our FAQs page or this article for the notable characteristics of a bona fide Featherweight.
- Your machine truly is a Featherweight, but the records were lost or not accurately recorded at the old Singer factories. Click here for the differences between a Featherweight 221 vs 222.
- Your Featherweight is among the few thathavenumbers that are difficult to read properly OR it is miss-stamped.
If your serial number is hard to decipher completely, then either take a pencil rubbing or closeup photo of the number for a better reading. If it falls outside of the charts below and you've verified that it is indeed a Featherweight model in option #1 above, then it may be a miss-stamped serial number. The only optionthen is to guesstimate the date, using the two letter prefix, by referencing the charts below and approximate the commission date based on the serial number sequences.
OTHERWISE, THERE ARE NO OTHER ORIGINAL SINGER FEATHERWEIGHT DATE RECORDS PRESERVED OR ARCHIVED.
If viewing the chart below on a mobile device, it is best viewed horizontally.
**********************************************
There is a long propounded myth that the Singer Company can pinpoint the very day of manufacture of its machines. The date given as a "birthdate", however, is simply the day on which vast batches of serial numbers were released to the various factories.
The dates given below are the days on which those batches were started, together with the number of machines in each consignment. The first Featherweights batched in 1933 begin with the two-letter prefix 'AD'. 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.
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. John's, Quebec Factory in Canada. 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 221K and those manufactured in St. John's were given the model number 221J.
In Summary:
AD = prefix of serial numbers assigned to the first Featherweights manufactured, beginning in 1933
Serial Number prefixes beginning with letter 'A' = manufactured in Elizabethport, New Jersey, USA
Serial Number prefixes beginning with letter 'E' = manufactured in Kilbowie, Scotland, United Kingdom
Serial Number prefixes beginning with letter 'J' = manufactured in St. John's, Quebec, Canada
(a few were partially manufactured in Kilbowie and then sent to Canada for finishing)
Models 221 (or 221-1) = manufactured in Elizabethport, New Jersey, USA
Models 221K = manufactured in Kilbowie, Scotland, United Kingdom
Models 221J = manufactured in St. John's, 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 1960's. 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.
Singer Featherweight 221 Machines (Black)
Prefix Series | Sequence | Batch Quantity | Commission Date | Year |
---|---|---|---|---|
AD | 541546 - 551545 | 10,000 | October 3rd | 1933 |
AD | 720746 - 730745 | 10,000 | September 10th | 1934 |
AD | 781846 - 791845 | 10,000 | November 27th | 1934 |
AD | 880156 - 890155 | 10,000 | March 18th | 1935 |
AD | 937406 - 947405 | 10,000 | June 24th | 1935 |
AD | 996956 - 999999 | 3044 | September 23rd | 1935 |
AE | 000001 - 007000 | 7000 | September 23rd | 1935 |
AE | 054366 - 064365 | 10,000 | December 30th | 1935 |
AE | 076516 - 086515 | 10,000 | March 25th | 1936 |
AE | 207616 - 222615 | 15,000 | July 13th | 1936 |
AE | 294041 - 309040 | 15,000 | November 5 | 1936 |
AE | 407941 - 422940 | 15,000 | March 15 | 1937 |
AE | 536641 - 556640 | 20,000 | June 11th | 1937 |
AE | 770591 - 790590 | 20,000 | December 8th | 1937 |
AE | 973541 - 993540 | 20,000 | May 24th | 1938 |
AF | 070706 - 090705 | 20,000 | October 10th | 1938 |
AF | 161806 - 181805 | 20,000 | February 15th | 1939 |
AF | 244106 - 264105 | 20,000 | July 11th | 1939 |
AF | 371856 - 391855 | 20,000 | December 5th | 1939 |
AF | 477181 - 497180 | 20,000 | April 10th | 1940 |
AF | 571881 - 596880 | 25,000 | August 15th | 1940 |
AF | 740751 - 760750 | 20,000 | January 7th | 1941 |
AF | 863951 - 883950 | 20,000 | April 1st | 1941 |
AF* | 907451 - 942450* | **** | May 14th* | 1941 |
AF | 998251 - 999999 | 1749 | July 1st | 1941 |
AG | 000001 - 018250 | 18,250 | July 1st | 1941 |
AG | 526101 - 546100 | 20,000 | September 19th | 1945 |
AG | 602856 - 622855 | 20,000 | February 18th | 1946 |
AG | 689391 - 709390 | 20,000 | June 4th | 1946 |
AG | 804771 - 824770 | 20,000 | September 16th | 1946 |
AG | 848346 - 858345 | 10,000 | October 25th | 1946 |
AG | 869446 - 889445 | 20,000 | November 22nd | 1946 |
AG | 970946 - 990945 | 20,000 | February 19th | 1947 |
AH | 050371 - 070370 | 20,000 | April 22nd | 1947 |
AH | 111971 - 131970 | 20,000 | June 26th | 1947 |
AH | 193771 - 223770 | 30,000 | August 19th | 1947 |
AH | 316071 - 346070 | 30,000 | October 28th | 1947 |
AH | 413571 - 443570 | 30,000 | January 22nd | 1948 |
AH | 550921 - 580920 | 30,000 | April 20th | 1948 |
AH | 640321 - 670320 | 30,000 | June 18th | 1948 |
AH | 799121 - 829120 | 30,000 | October 1st | 1948 |
AH | 973921 - 999999 | 26,079 | December 9th | 1948 |
AJ | 000001 - 013920 | 13,920 | December 9th | 1948 |
AJ | 103721 - 143720 | 40,000 | March 15th | 1949 |
AJ | 189171 - 229170 | 40,000 | November 18th | 1949 |
AJ | 348371 - 388370 | 40,000 | January 23rd | 1950 |
AJ | 552721 - 592720 | 40,000 | March 31st | 1950 |
AJ | 615621 - 655620 | 40,000 | June 1st | 1950 |
AJ | 781321 - 821320 | 40,000 | August 22nd | 1950 |
AJ | 887721 - 937720 | 50,000 | October 26th | 1950 |
AK | 071321 - 121320 | 50,000 | January 29th | 1951 |
AK | 389576 - 439575 | 50,000 | May 10th | 1951 |
AK | 576776 - 626775 | 50,000 | October 31st | 1951 |
AK | 745676 - 795675 | 50,000 | February 20th | 1952 |
AK | 984876 - 999999 | 15,124 | August 11th | 1952 |
AL | 000001 - 034875 | 34,875 | August 11th | 1952 |
AL | 158501 - 208500 | 50,000 | December 12th | 1952 |
AL | 389361 - 439360 | 50,000 | May 4th | 1953 |
AL | 524941 - 574940 | 50,000 | October 14th | 1953 |
AL | 689041 - 739040 | 50,000 | April 22nd | 1954 |
AL | 900891 - 950890 | 50,000 | January 17th | 1955 |
AM | 137761 - 187760 | 50,000 | June 10th | 1955 |
AM | 361036 - 411035 | 50,000 | February 27th | 1956 |
AM | 652586 - 702585 | 50,000 | January 29th | 1957 |
AM | 771106 - 821105 | 50,000 | September 27th | 1957 |
EE | 152221 - 152720 | 500 | August 25th | 1947 |
EE | 452721 - 453220 | 500 | December 24th | 1947 |
EE | 458241 - 459240 | 1000 | January 22nd | 1948 |
EE | 573424 - 578423 | 5000 | May 14th | 1948 |
EE | 802479 - 807478 | 5000 | September 21st | 1948 |
EE | 853479 - 863478 | 10,000 | December 10th | 1948 |
EF | 154176 - 164175 | 10,000 | May 23rd | 1949 |
EF | 278731 - 288730 | 10,000 | August 17th | 1949 |
EF | 558931 - 568930 | 10,000 | November 7th | 1949 |
EF | 688016 - 698015 | 10,000 | February 14th | 1950 |
EF | 700569 - 710568 | 10,000 | April 24th | 1950 |
EF | 907629 - 917628 | 10,000 | July 19th | 1950 |
EG | 072001 - 082000 | 10,000 | October 9th | 1950 |
EG | 302861 - 312860 | 10,000 | December 18th | 1950 |
EG | 343861 - 353860 | 10,000 | February 15th | 1951 |
EG | 433821 - 444820 | 11,000 | March 29th | 1951 |
EG | 637821 - 647820 | 10,000 | May 16th | 1951 |
EG | 703321 - 713320 | 10,000 | July 17th | 1951 |
EG | 957781 - 967780 | 10,000 | October 17th | 1951 |
EH | 001027 - 011026 | 10,000 | December 18 | 1951 |
EH | 132547 - 142546 | 10,000 | February 29th | 1952 |
EH | 236097 - 246096 | 10,000 | April 28th | 1952 |
EH | 370347 - 380346 | 10,000 | July 22nd | 1952 |
EH | 625778 - 635777 | 10,000 | October 8th | 1952 |
EH | 890433 - 900432 | 10,000 | March 4th | 1953 |
EJ | 211989 - 216988 | 5000 | September 4th | 1953 |
EK | 203139 - 213138 | 10,000 | February 14th | 1955 |
EK | 986373 - 991372 | 5000 | December 20th | 1955 |
EL | 537735 - 542734 | 5000 | June 13th | 1956 |
EM | 016257 - 021256 | 5000 | January 8th | 1957 |
EM | 596007 - 601006 | 5000 | August 2nd | 1957 |
EN | 235134 - 238133 | 3000 | April 17th | 1958 |
EN | 826834 - 829333 | 2500 | October 27th | 1958 |
EP | 256021 - 257520 | 1500 | May 18th | 1959 |
ES | 170544 - 175543 | 5000 | November 3rd | 1960 |
ES | 239244 - 249243 | 10,000 | January 10th | 1961 |
ES | 648144 - 658143 | 10,000 | May 15th | 1961 |
ES | 873744 - 883743 | 10,000 | August 19th | 1961 |
ET | 061345 - 071344 | 10,000 | November 2nd | 1961 |
*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.
Singer Featherweight White 221K / Tan 221J Machines
(Additional Information)
EV | 776991 - 826990 | 50,000 | March 3rd | 1964 |
EV | 846*** - 99**** | inconclusive ※ | 1964 | |
EW | 061691 - 071690 | 10,000 | August 6th | 1968 |
EY | 84**** - 99**** | inconclusive ※ | ? ※ see text below ※ | |
FA | 096*** - 132*** | inconclusive ※ | 1968 / 69 | |
FA | 202*** - 288*** | inconclusive ※ | 1968 / 69 | |
JE | 150000 - 162000** | inconclusive ※ | 1961 |
**Singer Sewing Machine models within this JE batch of serial numbers were made in 1961. A few Singer Featherweights were included in this series.
※ The dates provided cannot be guaranteed, of course, but are probably as good as we will ever find. 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). 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 doesn't 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 white/green machines or the few Featherweights made in Canada because dating records were apparently too inaccurate to source.
Singer Featherweight 222K Free-Arm Machines
EJ | 142734 - 142833 | 100 | July 23rd | 1953 |
EJ | 211839 - 211988 | 150 | September 2nd | 1953 |
EJ | 219989 - 220138 | 150 | September 22nd | 1953 |
EJ | 223639 - 223838 | 200 | October 1st | 1953 |
EJ | 225839 - 226038 | 200 | October 14th | 1953 |
EJ | 226039 - 226438 | 400 | October 21st | 1953 |
EJ | 236439 - 236638 | 200 | October 29th | 1953 |
EJ | 266639 - 271638 | 5000 | November 18th | 1953 |
EJ | 616272 - 626271 | 10,000 | March 31st | 1954 |
EJ | 908425 - 918424 | 10,000 | September 10th | 1954 |
EK | 319939 - 329938 | 10,000 | March 14th | 1955 |
EK | 628163 - 638162 | 10,000 | August 16th | 1955 |
EL | 176520 - 186519 | 10,000 | March 2nd | 1956 |
EL | 681756 - 686755 | 5000 | September 17th | 1956 |
EM | 234470 - 239469 | 5000 | February 26th | 1957 |
EM | 601007 - 606006 | 5000 | August 2nd | 1957 |
EM | 957021 - 962020 | 5000 | November 15th | 1957 |
EN | 134513 - 139512 | 5000 | March 17th | 1958 |
EP | 131001 - 133500 | 2500 | March 3rd | 1959 |
EP | 541572 - 544071 | 2500 | September 22nd | 1959 |
EP | 758473 - 760972 | 2500 | December 18th | 1959 |
ER | 022034 - 024533 | 2500 | March 15th | 1960 |
ER | 316034 - 318533 | 2500 | May 30th | 1960 |
ER | 900043 - 902542 | 2500 | September 7th | 1960 |
ES | 165344 - 167843 | 2500 | October 19th | 1960 |
ES | 352344 - 357343 | 5000 | January 31st | 1961 |
ES | 522944 - 527943 | 5000 | March 30th | 1961 |
Some people like to find machines associated with a particular year - whether it be a birth year, anniversary, etc. Click here for our "Birthdate Machines" chart indicating level of difficulty to find certain years.