The Singer company was founded in 1851 and is widely known for their sewing machines. The model numbers for each sewing machine are clearly posted in most machines, except for the earliest models. For the rare few that do not have model numbers printed on the machine, there is still a posted serial number, which can offer insight as to the model.
Look on back end of the machine, where the hand wheel and electrical cord are located. There will be a printed label. The bottom number is the model number. This location is valid for all models manufactured since 1990.
Examine the front panel, just above the needle and under the label "Singer." Model number for machines manufactured between 1970 and 1989 are printed there.
Look on the front of the machine, on the right hand side, around the switch length controller. Model numbers are located there for machines manufactured between 1960 and 1970.
Locate a small plate on the front of the machine, on the right side. This will be near the base. The number corresponds to model numbers on machines manufactured before 1960.
Look on the front base of the unit for a serial number if you cannot find a model number. On some of the earliest machines, no model number was printed. However, with the serial number, you can obtain the model number through Singer by calling 1-800-4-SINGER.