Dating Your Singer Featherweight Machine
Type your Featherweight’s serial number below — we’ll look her up in Singer’s own record books.
Enter your serial number
Two letters and six digits — found on the underside of the machine (e.g. AF863951).
Can't find the number? See where to look →
WHERE IS THE SERIAL NUMBER?
Tip the machine gently back and look underneath the machine near the corner for a raised part of the casting on which the serial number is stamped — two capital letters followed by six digits. On the very earliest Featherweights (the 1933 AD541***–AD542*** series) it will be stamped under the removable bottom drip pan instead.
THE RECORD BOOKS
The complete batch records, exactly as Singer commissioned them. The interactive tool above reads from these same tables.
Browse the full serial-number charts
| Prefix | Serial range | Batch | Commissioned | Year | Factory |
|---|---|---|---|---|---|
| AD | 541546–551545 | 10,000 | October 3rd | 1933 | US |
| AD | 720746–730745 | 10,000 | September 10th | 1934 | US |
| AD | 781846–791845 | 10,000 | November 27th | 1934 | US |
| AD | 880156–890155 | 10,000 | March 18th | 1935 | US |
| AD | 937406–947405 | 10,000 | June 24th | 1935 | US |
| AD/AE | AD996956–AE007000 | 10,000 | September 23rd | 1935 | US |
| AE | 054366–064365 | 10,000 | December 30th | 1935 | US |
| AE | 076516–086515 | 10,000 | March 25th | 1936 | US |
| AE | 207616–222615 | 15,000 | July 13th | 1936 | US |
| AE | 294041–309040 | 15,000 | November 5th | 1936 | US |
| AE | 407941–422940 | 15,000 | March 15th | 1937 | US |
| AE | 536641–556640 | 20,000 | June 11th | 1937 | US |
| AE | 770591–790590 | 20,000 | December 8th | 1937 | US |
| AE | 973541–993540 | 20,000 | May 24th | 1938 | US |
| AF | 070706–090705 | 20,000 | October 10th | 1938 | US |
| AF | 161806–181805 | 20,000 | February 15th | 1939 | US |
| AF | 244106–264105 | 20,000 | July 11th | 1939 | US |
| AF | 371856–391855 | 20,000 | December 5th | 1939 | US |
| AF | 477181–497180 | 20,000 | April 10th | 1940 | US |
| AF | 571881–596880 | 25,000 | August 15th | 1940 | US |
| AF | 740751–760750 | 20,000 | January 7th | 1941 | US |
| AF | 863951–883950 | 20,000 | April 1st | 1941 | US |
| AF | 922451–942450 | ~20,000 | May 14th | 1941 | US |
| AF/AG | AF998251–AG018250 | 19,999 | July 1st | 1941 | US |
| AG | 526101–546100 | 20,000 | September 19th | 1945 | US |
| AG | 602856–622855 | 20,000 | February 18th | 1946 | US |
| AG | 689391–709390 | 20,000 | June 4th | 1946 | US |
| AG | 804771–824770 | 20,000 | September 16th | 1946 | US |
| AG | 848346–858345 | 10,000 | October 25th | 1946 | US |
| AG | 869446–889445 | 20,000 | November 22nd | 1946 | US |
| AG | 970946–990945 | 20,000 | February 19th | 1947 | US |
| AH | 050371–070370 | 20,000 | April 22nd | 1947 | US |
| AH | 111971–131970 | 20,000 | June 26th | 1947 | US |
| AH | 193771–223770 | 30,000 | August 19th | 1947 | US |
| AH | 316071–346070 | 30,000 | October 28th | 1947 | US |
| AH | 413571–443570 | 30,000 | January 22nd | 1948 | US |
| AH | 550921–580920 | 30,000 | April 20th | 1948 | US |
| AH | 640321–670320 | 30,000 | June 18th | 1948 | US |
| AH | 799121–829120 | 30,000 | October 1st | 1948 | US |
| AH/AJ | AH973921–AJ013920 | 39,999 | December 9th | 1948 | US |
| AJ | 103721–143720 | 40,000 | March 15th | 1949 | US |
| AJ | 189171–229170 | 40,000 | November 18th | 1949 | US |
| AJ | 348371–388370 | 40,000 | January 23rd | 1950 | US |
| AJ | 552721–592720 | 40,000 | March 31st | 1950 | US |
| AJ | 615621–655620 | 40,000 | June 1st | 1950 | US |
| AJ | 781321–821320 | 40,000 | August 22nd | 1950 | US |
| AJ | 887721–937720 | 50,000 | October 26th | 1950 | US |
| AK | 071321–121320 | 50,000 | January 29th | 1951 | US |
| AK | 389576–439575 | 50,000 | May 10th | 1951 | US |
| AK | 576776–626775 | 50,000 | October 31st | 1951 | US |
| AK | 745676–795675 | 50,000 | February 20th | 1952 | US |
| AK/AL | AK984876–AL034875 | 49,999 | August 11th | 1952 | US |
| AL | 158501–208500 | 50,000 | December 12th | 1952 | US |
| AL | 389361–439360 | 50,000 | May 4th | 1953 | US |
| AL | 524941–574940 | 50,000 | October 14th | 1953 | US |
| AL | 689041–739040 | 50,000 | April 22nd | 1954 | US |
| AL | 900891–950890 | 50,000 | January 17th | 1955 | US |
| AM | 137761–187760 | 50,000 | June 10th | 1955 | US |
| AM | 361036–411035 | 50,000 | February 27th | 1956 | US |
| AM | 652586–702585 | 50,000 | January 29th | 1957 | US |
| AM | 771106–821105 | 50,000 | September 27th | 1957 | US |
| Prefix | Serial range | Batch | Commissioned | Year | Factory |
|---|---|---|---|---|---|
| EE | 152221–152720 | 500 | August 25th | 1947 | SCO |
| EE | 452721–453220 | 500 | December 24th | 1947 | SCO |
| EE | 458241–459240 | 1,000 | January 22nd | 1948 | SCO |
| EE | 573424–578423 | 5,000 | May 14th | 1948 | SCO |
| EE | 802479–807478 | 5,000 | September 21st | 1948 | SCO |
| EE | 853479–863478 | 10,000 | December 10th | 1948 | SCO |
| EF | 154176–164175 | 10,000 | May 23rd | 1949 | SCO |
| EF | 278731–288730 | 10,000 | August 17th | 1949 | SCO |
| EF | 558931–568930 | 10,000 | November 7th | 1949 | SCO |
| EF | 688016–698015 | 10,000 | February 14th | 1950 | SCO |
| EF | 700569–710568 | 10,000 | April 24th | 1950 | SCO |
| EF | 907629–917628 | 10,000 | July 19th | 1950 | SCO |
| EG | 072001–082000 | 10,000 | October 9th | 1950 | SCO |
| EG | 302861–312860 | 10,000 | December 18th | 1950 | SCO |
| EG | 343861–353860 | 10,000 | February 15th | 1951 | SCO |
| EG | 433821–444820 | 11,000 | March 29th | 1951 | SCO |
| EG | 637821–647820 | 10,000 | May 16th | 1951 | SCO |
| EG | 703321–713320 | 10,000 | July 17th | 1951 | SCO |
| EG | 957781–967780 | 10,000 | October 17th | 1951 | SCO |
| EH | 001027–011026 | 10,000 | December 18th | 1951 | SCO |
| EH | 132547–142546 | 10,000 | February 29th | 1952 | SCO |
| EH | 236097–246096 | 10,000 | April 28th | 1952 | SCO |
| EH | 370347–380346 | 10,000 | July 22nd | 1952 | SCO |
| EH | 625778–635777 | 10,000 | October 8th | 1952 | SCO |
| EH | 890433–900432 | 10,000 | March 4th | 1953 | SCO |
| EJ | 211989–216988 | 5,000 | September 4th | 1953 | SCO |
| EK | 203139–213138 | 10,000 | February 14th | 1955 | SCO |
| EK | 986373–991372 | 5,000 | December 20th | 1955 | SCO |
| EL | 537735–542734 | 5,000 | June 13th | 1956 | SCO |
| EM | 016257–021256 | 5,000 | January 8th | 1957 | SCO |
| EM | 596007–601006 | 5,000 | August 2nd | 1957 | SCO |
| EN | 235134–238133 | 3,000 | April 17th | 1958 | SCO |
| EN | 826834–829333 | 2,500 | October 27th | 1958 | SCO |
| EP | 256021–257520 | 1,500 | May 18th | 1959 | SCO |
| ES | 170544–175543 | 5,000 | November 3rd | 1960 | SCO |
| ES | 239244–249243 | 10,000 | January 10th | 1961 | SCO |
| ES | 648144–658143 | 10,000 | May 15th | 1961 | SCO |
| ES | 873744–883743 | 10,000 | August 19th | 1961 | SCO |
| ET | 061345–071344 | 10,000 | November 2nd | 1961 | SCO |
| Prefix | Serial range | Batch | Commissioned | Year | Factory |
|---|---|---|---|---|---|
| EJ | 142734–142833 | 100 | July 23rd | 1953 | SCO |
| EJ | 211839–211988 | 150 | September 2nd | 1953 | SCO |
| EJ | 219989–220138 | 150 | September 22nd | 1953 | SCO |
| EJ | 223639–223838 | 200 | October 1st | 1953 | SCO |
| EJ | 225839–226038 | 200 | October 14th | 1953 | SCO |
| EJ | 226039–226438 | 400 | October 21st | 1953 | SCO |
| EJ | 236439–236638 | 200 | October 29th | 1953 | SCO |
| EJ | 266639–271638 | 5,000 | November 18th | 1953 | SCO |
| EJ | 616272–626271 | 10,000 | March 31st | 1954 | SCO |
| EJ | 908425–918424 | 10,000 | September 10th | 1954 | SCO |
| EK | 319939–329938 | 10,000 | March 14th | 1955 | SCO |
| EK | 628163–638162 | 10,000 | August 16th | 1955 | SCO |
| EL | 176520–186519 | 10,000 | March 2nd | 1956 | SCO |
| EL | 681756–686755 | 5,000 | September 17th | 1956 | SCO |
| EM | 234470–239469 | 5,000 | February 26th | 1957 | SCO |
| EM | 601007–606006 | 5,000 | August 2nd | 1957 | SCO |
| EM | 957021–962020 | 5,000 | November 15th | 1957 | SCO |
| EN | 134513–139512 | 5,000 | March 17th | 1958 | SCO |
| EP | 131001–133500 | 2,500 | March 3rd | 1959 | SCO |
| EP | 541572–544071 | 2,500 | September 22nd | 1959 | SCO |
| EP | 758473–760972 | 2,500 | December 18th | 1959 | SCO |
| ER | 022034–024533 | 2,500 | March 15th | 1960 | SCO |
| ER | 316034–318533 | 2,500 | May 30th | 1960 | SCO |
| ER | 900043–902542 | 2,500 | September 7th | 1960 | SCO |
| ES | 165344–167843 | 2,500 | October 19th | 1960 | SCO |
| ES | 352344–357343 | 5,000 | January 31st | 1961 | SCO |
| ES | 522944–527943 | 5,000 | March 30th | 1961 | SCO |
| Prefix | Serial range | Batch | Commissioned | Year | Factory |
|---|---|---|---|---|---|
| EV | 776991–826990 | 50,000 | March 3rd | 1964 | SCO |
| EW | 061691–071690 | 10,000 | August 6th | 1968 | SCO |
| JE | 150000–162000 | ~12,000 | (records limited) | 1961 | CAN |
COMMON QUESTIONS
How do I find my Singer Featherweight's serial number?
Tip the machine gently back and look underneath, near a corner, for a raised part of the casting where the serial is stamped — two capital letters followed by six digits (for example, AF863951). On the earliest 1933 machines it may be under the removable bottom drip pan. The "221" or "222K" on the front of the machine is the model, not the serial.
What year was my Featherweight made?
Enter your serial number in the tool above. The two-letter prefix and the digits place your machine in a specific batch that Singer commissioned on a known date — which gives you the manufacture year. Featherweights were made from 1933 (US) through the late 1960s (Scotland).
Does the serial number tell me where my machine was made?
Yes. The prefix reveals the factory: A-series (AD–AM) was made in Elizabethport, New Jersey; E-series and F-series (EE onward) in Kilbowie, Scotland; J-series tan machines in St. Jean, Québec, Canada. The tool shows the factory automatically.
Is the date exact?
It's an excellent approximation. The date shown is when Singer assigned that batch of serial numbers to the factory — your specific machine was typically assembled within the following weeks. For dating a vintage Featherweight, the year is reliable.
How do I tell a 221 from a 222K?
The 222K has a removable "free arm" — slide off the bed extension and you can sew around cuffs and sleeves. The 221 has a fixed flat bed. The 222K was made only in Scotland (1953–1961). Full 221-vs-222 comparison →
MAKE THE MOST OF YOUR FEATHERWEIGHT
Keep it sewing
Bring Your Machine Back to Life
Clean, oil, and service it with a kit matched to your model, and feel it purr like new.
Maintenance Kits →Put it to work
Piece Accurate Quarter-Inch Seams
Set up your Featherweight to stitch true 1/4” seams and free-motion quilt with confidence.
Quilting Bundles →Make it official
Claim Your Free Ownership Certificate
Claim a free keepsake certificate personalized with your machine’s year, factory, and story.
Get the Certificate →— since 2005 —