This will tell you when the sewing machine was issued. Singer has recently pulled some of their dating and identification information from their website. Later models had it stamped on a raised pad underneath the bed, around the edge somewhere. Singer Sewing Machine Serial Number Database When was my sewing machine made? The serial number will be on a metal plate somewhere on your Singer sewing machine. What model do I have? The Singer 99k sewing machine is small in size measuring only 12-1/2" wide, this image shows an early version the 99K (99K21 - 26) made between 1924 to 1954. Home Series Serial Numbers Singer Sewing Machine Company Series Serial NumbersSinger Sewing Machine Serial Number Database. That is a serial number referring ONLY to the motor itself. When you find your serial number, you then crosscheck it with a database on Singer’s website. IMPORTANT NOTE - The machine serial number is NOT stamped on the motor. Pre 1900, 19th Century, Victorian Singer sewing machine serial numbers If your sewing machine does not have a model number, but has a serial number similar in location to the image above, use the images below to help identify the sewing machine model number. For most machines before the 1950's, the serial number was located on top of the bed at the front right corner. On pre-1900 Singer machines if there are two serial numbers, always use the higher, longer, larger, serial number of the two to date your machine. Ok, now to the meat and potatoes of this article. How To Date Your Singer Sewing Machine.