A Anderson South Carolina AP Lagos Nigera B Bonnieres France BE Casablanca Morocco BG Bancock Thailand C Campinas Brazil CH Santiago Chili Cy Ratmalana Ceylon E Elizabeth NJ USA F Taytay Phillipines G Karlsruhe Germany GH Tema Ghana H Karachi Pakistan HC Chittigong East Pakistan J St Jaohns Canada K Clydebank Scotland L Bogota Colombia LM Kinshasha Congo M Monza Italy ML Petaling Malaysia N Taichung Taiwan P Penrith NSW Australia PR Lima Peru Q Johannesburg S Africa R Querataro Mexico T Delhi India TN Tunis Tunisia U Utsunomiga Japan V Buenos Aires Argentinia VN Saigon South Vietnam Y Maltepe Turkey Z Alcenon France There were also "factories" in Wurselen in Germany and Alencon in France but I can find no record of designations for them.
06/11/37 *****transitional production run 221__ AE 77-79 ….. 05/24/38 *****transitional production run 221__ AF 07-09 …..
08/15/40 *****transitional production run 221__ AF 74-76 …..
Singer Featherweight sewing machines were made by the company from 1933 to 1964.
The durable, lightweight machines are still a decent sewing machine for quilters.
10/14/53 *****transitional production run 221__ AL 68-73 …..