[Spike]

Hello Guys first post so please bare with me
You got me thinking about what were sold as original pulleys I bought about 20 years ago and it looks like they may be reproductions. The water pump pulley I bought has a smooth hub the 4 is different and has a deeper stamping than the original that I have,
The original has the 8 indents into the hub the 4 is different the stamping isn't as deep and also has an S stamped on the opposite side of the hub.
I also purchased a crank pulley 3955291AB from the same guy not sure if it is real or not, the original I have also has an S stamped across from the number stamping.
When did they start the reproductions?
And does anyone else have an S stamped in your original pulleys?