I remember Polo mints going from 4.5p to 5p in ~1975. (I was 7 and such things were important...). It's curious that the minimum possible percentage increase th

I remember Polo mints going from 4.5p to 5p in ~1975. (I was 7 and such things were important...). It's curious that the minimum possible percentage increase then was 11%, but now, when Polo mints are around 60p, the minimum possible increase is 1.7%. Getting rid of all coins < 5p would return us to the same "granularity". (And possibly be inflationary.)