if you look for the "v" youll miss out on a lot of marbles...whoever told you that was misinformed....while many conquers display the "v", not all do....some other styles have em but its an anomily...lotsa people collect them....lotsa jabo marbles have the trait and some have kinda a corkscrew...get ya an american machine made marbles book by six metzler and johnson....its most helpful...of the four marbles you posted the top one is a vitro....the others...jabo...