WW2 Thompson Recoil Springs (10) in the original wrapping, even though all the models of Thompson (1928 / M1 & M1A1) use the similar / same Recoil Spring there are 2 different part numbers – 1928A1 – A153024 / M1 – A153116 (they are interchangeable in any of the 3 models). All the springs were made by the 2 companies – American Steel and Wire Co. in New York, NY and Wallace Barnes Company in Bristol, CT. but there is no way to identify who made them, or any soring unless in an original box which I have never seen.
These springs are in the typical WW2 Green Waxed Paper, no labels but still sealed. I have had several of these over the years and kept a few un-opened so I know what is in it.