Are the start part number stamped into the body near the back of the motor?

If so, do the part numbers below have a specific application?

2099157 date code 224

2091979 date code 388

4111860 date code 344

I tried searching, here and the web but came up empty.

I assume that a 1965 date coded starter and a 1975 date coded starter would have differnet part numbers?


I used to care but....... things have changed