Can anyone tell me how to distinguish the coins of Enrico (
Henry) II, III and IV from Pavia. I do not have
MIR Lombardia (and cannot find one).
Biaggi only lists one coin for each and the coins I have don't match any of them.
CNI lists many varieties that all seem very much the same to me and I cannot see a clear difference between the coins of the three rulers. Anyone know? Thanks.