Hi Lynn,
I'm beginning to think that the shape of the block on the rear of the motor is an optical illusion and that of the 4 motors in your photograph it's the second one down, based on the lever and other details.
This also seems to be quite a common version.
Would it be an option for late 1941?
What do you think?
Do you have any dimensions and photos that I could use to finish the drawing?
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