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Date Your Featherweight — Tool Preview

Preview for review — the new interactive dating tool, not yet live on the site.

Singer Featherweight Schoolhouse

Date Your Featherweight

Every Singer Featherweight carries a serial number that tells you when and where it was born. Enter yours below and we'll find the year it was made, the factory that built it, and the model you own.

Enter your serial number

Two letters and a string of digits — found on the underside of the machine bed (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.

Browse the full serial-number charts

The complete batch records, exactly as Singer commissioned them. The interactive tool above reads from these same tables.

Model 221 (Black) — United States & Scotland
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 996956–999999 3,044 September 23rd 1935 US
AE 1–7000 7,000 September 23rd 1935 US
AE 54366–64365 10,000 December 30th 1935 US
AE 76516–86515 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 70706–90705 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 907451–942450 ~ May 14th 1941 US
AF 998251–999999 1,749 July 1st 1941 US
AG 1–18250 18,250 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 50371–70370 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 973921–999999 26,079 December 9th 1948 US
AJ 1–13920 13,920 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 71321–121320 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 984876–999999 15,124 August 11th 1952 US
AL 1–34875 34,875 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
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 72001–82000 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 1027–11026 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 16257–21256 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 61345–71344 10,000 November 2nd 1961 SCO
EV 776991–826990 50,000 March 3rd 1964 SCO
EW 61691–71690 10,000 August 6th 1968 SCO
Model 222K Free-Arm — Scotland
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 22034–24533 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
White & Tan late machines
Prefix Serial range Batch Commissioned Year Factory
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 →