How to Identify an old machine without a serial number..?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.The Singer model 128K also had the vibrating type shuttle.

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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. The stitch length was adjusted via a screw and the machine did not stitch backwards.

Later versions 99K31 had a stitch length up-down lever with reverse stitch and numbered tension dial - Year 1955 The Singer 15K is always recognised by its tension unit being on the left face of the machine.

The difference was the 128K was smaller at only 12-1/2" bed size.

It always look a neater machine because of its compact size.

It was manufactured between 1907 to 1920 the early machines were only Black and Gold with no colour.

The 66K has a bed size of 14-1/2" so is much wider than the 99K The Singer 28K had what was called a vibrating shuttle or boat shuttle or bullet shuttle...After 1900, the machine serial numbers have a single or two-letter prefix.The tables are divided into these three categories: No Letter Serials - Single Letter Prefix A - Podolsk, Russia B - Elizabeth, New Jersey USA C - Wittenberge, (Prussia) Germany D - Elizabeth, New Jersey USA E - Podolsk, Russia F - Clydebank, Scotland G - Elizabeth, New Jersey USA H - Elizabeth, New Jersey USA J - Clydebank, Scotland K - Elizabeth, New Jersey USA L - Elizabeth, New Jersey USA M - Clydebank, Scotland N - Elizabeth, New Jersey USA P - Clydebank, Scotland R - Clydebank, Scotland S - Clydebank, Scotland S*- Podolsk, Russia (*100 "S" machines made in Podolsk) T - Podolsk, Russia V - Clydebank, Scotland W - Bridgeport, Connecticut USA X - Clydebank, Scotland Y - Clydebank, Scotland AA to AT - Elizabeth, New Jersey USA BA to BY - Elizabeth, New Jersey USA CA to CY - Bogota, Colombia DA to DY - Karachi, Pakistan EA to EY - Clydebank, Scotland FA to FY - Clydebank, Scotland GA to GY - Clydebank, Scotland HA to HY - Istanbul, Turkey JA to JE - St.The Singer 222K as shown has the sleeve arm or sometimes called tubular bed.The Singer 221K was the same machine without the tubular bed, it also had the lift up fabric table like the 222K Both the 222K and 221K were tiny machines known as the original Singer Featherweight machines.The Singer 28K was small at only 12-1/2" bed size and had its bobbin winder located high-up near the hand wheel. Singer 127K sewing machine was very similar to the 28K.