Two Digit Dating System for Black Singer Featherweights Copyright @2007-2009 class221 Example: 221__AD 884639 Ignore the last 4 digits; then lookup 221__ AD 88……3/18/1935.

This quick and easy method for dating black Singer Featherweights uses only the 2 letter prefix and the first 2 digits of the 6 digit serial number.

To identify and date your sewing machine, look up the serial number on a chart like the free one in this article.

08/25/47 *****limited production run (500 units) 221K_ EE 452-453 …

07/19/50 *****transitional production run 221K_ EG 07-08 …..

10/31/51 *****transitional production run 221__ AK 74-79 …..

10/14/53 *****transitional production run 221__ AL 68-73 …..

07/23/53 *****limited production run (100 units) 222K_ EJ 211 ………….. Model 221K Featherweights were originally equipped with either 110 volt or 220 volt motors.

08/19/61 (white/green models only) 222K_ EJ 14 ……………. Motors: Models 221 and 221-1 were originally equipped with 110-120 volt motors.

09/23/35 *****transitional production run 221__ AE 05-06 …..

06/11/37 *****transitional production run 221__ AE 77-79 ….. 05/24/38 *****transitional production run 221__ AF 07-09 …..

05/04/53 *****transitional production run 221__ AL 52-57 ….. 01/22/48 *****limited production run (1000 units) 221K_ EE 57 …………

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