Singer Sewing Machines
Serial Number Stamping Oddities
Missing Numbers or Letters
Courtesy of Micael and Claire
The first serial number is on a Singer 401G made in Germany. It is missing the prefix. Where the expected prefix would be there is a blank space.
The second serial number is on a Singer 617U made at the Singer factory in Utsunomiya, Tochigi, Japan. The prefix of TB is clearly displayed, but the serial number itself is missing.
G or C Serial Numbers
Courtesy of Bev, Edey, Chrys and Wil
This picture shows the difference in stampings of serial numbers in the G series from Elizabethport and how easy it is to mistake a G for a C in some cases.
The only C serial number (from Wittenberge) is the example from Chrys, bottom right.
Short Serial Number
Courtesy of Kim
The serial number is N11. It isn't a model number.