I have always found the naming of these to be confusing. I have seen them referred to as Vitro Exotics, Exotic Conquerors and Fancy Tiger Eyes. I think the Exotic Conqueror name for these is a little misleading, since I think they were produced later than Conquerors and I don't think they have ever been seen in Conqueror packaging. To me, Fancy Tiger Eye is the better name, since I think they have been seen in Tiger Eye packaging. Can anyone explain to me the relationship of these marbles to Conquerors and Tiger Eyes?