Peter Lawrence claimed varieties at every possible occasion. CC often commented a better specimen needs to come along. A nice record of dies/repaired/blocked dies would be lovely. As I said for the time being CC has probably got the best base. We can use his collection and merge in the Oxford farthing collection and throw in anything else we discover. I like to be a completest, my mile stone I reached a few years ago was every cu currency 1672 to 1956 (except for a few impossibles...1676???,1693,1718 etc) I now spend many hours sorting on dates and using Colin's fantastic resource to add a few varieties  on the cheap, When a publication comes out they won't be so.