Topics: Machine Dating - class221.com

Two Digit Dating System for Black Singer Featherweights
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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.

The serial number reservation date is often confused as the actual production date or “birthdate”. For example, the birthdate for 221 AD 789994 is not 11/27/1934, but is sometime between 11/27/1934 and 03/18/1935, when the next production run began for Class 221, Model 221’s at Elizabethport.

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