AA....1924 AB....1926 AC....1928 AD....1930-34 AE....1935-36 AF....1938 AG....1941 AH....1947-48 AI....1948 AJ....1950 AK....1951 AL....1953-55 AM....1954-56 NA....1951-52 JB.....1945 JC....1948 W.....1954 ED....1941 EE....1947 EF.....1949 EG....1950 EH....1951 EJ.....1953 ES.....1962 EV.....1964 White fw 1968 - 70 SINGER DATES N....1900 L....1901 K....1902 B....1904 H....1906 D....1908 G--0,999,999....1909 G--2,500,000....1910 G--4,400,000....1913 G--6,500,000....1916 G--8,500,000....1919 G--9,999,999....1921 G--0,998,000....1924 F....1924 Y....1925 Model Years made Comments ----------------------------- 15 15-13 15-90 24 24-50 treadle, small 24-80 27 treadle 28-4 hand-cranked, 3/4 size, vibrating shuttle 31kls industrial 44kl3 1925 treadle 66 treadle, drop-in bobbin 66-1 treadle 66-4 66-6 66-16 99k 3/4 size, hand-cranked or electric portable 99-13 knee-press 99k-28 portable 101 127 treadle 128 portable 128-13 132k6 industrial 185j 1960-62 green portable 191 industrial 2-56 featherweight 221-1 " 221b 1968-70 white " 221j tan ", beige 221k 1941-64 black ", off white 221k1 " 221k5 " 221k7 " white " 221?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.

dating singer featherweight machine-34

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" 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.

Graham worked with Singer directly to remove some of the errors and fix some anomalies in the old charts.

There are still some errors in the post ET series listings, but they are probably as good as we will ever get.

Finding a rogue 221, for example, in a batch of 50,000 99K machines simply tells us there were some Featherweights within that group of numbers -- it doesn't help us to know with which number the group started or ended or how many 221 machines were involved.

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 Featherweights manufactured, beginning in 1933Serial Number prefixes beginning with letter 'A' = manufactured in Elizabethport, New Jersey, USASerial Number prefixes beginning with letter 'E' = manufactured in Kilbowie, Scotland, United Kingdom Serial Number prefixes beginning with letter 'J' = manufactured in St.

John's, Newfoundland, Canada 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. The dates below are not guaranteed, of course, but are simply the best available from Graham Forsdyke's records and those supplied by the Singer Company.