I just saw, that Norway is using the Brekke catalog, which “nobody” not from Norway would have. The German States have been invaded by AKS references, and I suppose other countries are suffering from the introduction of well meant localisation of references.
Could numista set up a rule, where the KM# is the most important (it should be number ONE in the reference list, if existing).
I still think, that the majority of our members use the KM# for coins from 1601 and upwards in time, so why use the local numbers, nobody has those catalogs! Coins from before 1600 will use whatever existing catalogs, which is OK. Did anybody try to see the split before 1601 and after 1601 in the entered coins in numista, just to get a real idea about, what we talk about?