Dating wertheim treadle sewing machine
The Aluminium body machines were made in Black/Gold, Beige or Beige/Brown.
First introduced in 1935 and continued in production up until 1962 Despite the differing body shapes and apart from it's smoothness, the 201K can be recognised by the large disc with the stitch length lever protruding from it.
It had smoothness that other sewing machine manufacturers could only dream about. The Singer 201K was cast iron in Black with a round neck body, also made with an Aluminium body which had a square neck.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 light aluminium frame was only 9-3/4" wide, even with the fabric rest down it still was only 14-1/2"....!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.Its bobbin had to be inserted into a bobbin case, then the case was inserted into the machine vertically to the left of the needle.