These are the serial numbers which begin with a two letter prefix from the St. Johns, Quebec, Canada plant.
Many of these serial numbers have been reported by individual Featherweight Fanatics.
Unless indicated by an "*" they are not the actual high or low serial numbers allotted by Singer.
| Date | Low in allotment | High in allotment | Model | # allotted | Qty on database |
|---|
| starting 5/23/60 | JA series |  | | | |
| JA267735 | | | | |
| JA829431 | | 128 | | |
| 1936 | JB | | | | |
| JB512526 | | 127 or 128 | | |
| JB846706 | | 15-88 | purchased in 1948 | |
| 1948 | JC | | | | |
| JC161342 | | 128-13 | | |
| 5/23/60? 1951? | JC169800 | JC750785 | 15-91, 15-90 | | |
| JC354014 | | | | |
| 1951? | JC433322 | | 15 | | |
| 5/23/60 | JC853223 | | 15-91 | | |
| 1959 | JD | | | | |
| JD769945 | | 185J | | |
| After 5/23/60 | JD708152 | | 185J | | |
| JD798829 | | 185J | | |
| JD812832 | | 185J | purchased in 1948 | |
| 5/23/60 | JD835194 | JD853702 | 185J | | |
| 1961 | JE | | | | |
| JE083453 | | 328J | | |
| JE132437 | | 327J | | |
| JE150311 | | 221J(Tan) | | |
| JE152928 | | 221J(Tan) | | |
| JE156214 | | 221J | | |
| JE157150 | | 221J(Tan) | | |
| JE157500 | | 221J(Tan) | | |
| JE158346 | | 221J(Tan) | | |
| JE158888 | | 221J(Tan) | | |
| JE160854 | | 221J(Tan) | | |
| JE161374 | | 221J(Tan) | | |
| JE944465 | | 413 | | |