I think I was wrong
I bought a 221 featherweight quite a few years ago. I paid more than I should have for it but I wanted it as it was in excellent condition. Once I really looked at it I noticed that the dial showing the numbers for the tension was missing. I have been irritated about that for some time. That is, thinking I didn't have enough sense to notice that when I bought it. The serial number says it is 1936. Today I looked up a picture of a 1936 featherweight and it doesn't have the number dial on the tension spool either. I think my machine is exactly the way it is supposed to be. Am I correct.