I am looking for origins of some coin varieties and errors.
For that I need some particular info on how the dies are made. I hope that there is an expert on this forum who is familiar with details of the minting process.
Specifically, I am looking for 1 cent coins of the period from 1975 to 1995.
Question 1: Is the rim part present on a working hub?
If the answer is "Yes", then how do they make rims of different thickness for Business Strikes and for PL/SP?
Question 2: For 1975 to 1995, were Muster Hubs fully dated or there was some digit punching into Master Dies?
Question 3: Is there a list of Master Hubs used for decimal coins production?
Thank you.