I posted awhile back about my singer 201 in a bentwood case that needed a knee bar lever in order to operate. Macybaby was very helpful with her information about the two different bars. Here is a better picture of the inside of the hole in the bentwood base. So Macybaby, in your picture from my earlier posting showing the two different bars, is the bar I need the one on the left. Also here is a knee bar lever listing on ebay that is different from either of the two pictures.
http://www.ebay.co.uk/itm/VINTAGE-SI...item33939b5b61
I am totally confused as to what knee bar lever I need.