Has to be first class with ice cold wine and sun...don't do this snow lark - as it is right now
Right, if we call them A, B. C, and D from left to right..
Haven't got anything to hand with which to weigh them but A is a smidgen smaller than B,
although that is probably to do with wear and tear - yes 39mm.
C is 19mm while D is 21mm.
B has a couple of nicks on the rim but there does not appear to be any silver showing through.
Hope that is more helpful - apologies for any vagueness.