Singer sewing machine dating by serial number
The list starts with the USA made 221, then the UK made 221K, and finally the UK made 222K.For a complete production record in file format of all available Singer machines by the serial number prefix, please look towards the bottom LEFT side of this webpage for the prefix file you need, then click on the tab to download the file.
The manufacture dating provided here is reproduced from the original Company register numberlog books.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. 08/15/40 *****transitional production run 221__ AF 74-76 ….. 07/01/41 *****transitional production run 221__ AG 00-01 …..