Cross reference for Seated Lib Half dollars... WB-103 to WB?
Trying to find some sort of cross reference between PCGS Wiley-Bugert numbers and NGC Wiley-Bugert numbers. PCGS uses Variety numbers like WB-1 to WB 19, etc,, where NGC uses WB-101, WB-103, WB-104, etc.
How do I cross reference between them? [ NGC says: 1856 1/1 VP-001 50C MS, NGC Attribution: VP-001, Cross Reference: Wiley-Bugert: WB-102 ]. [ PCGS says : WB-1 Large O, WB-2 Large O, WB-3 Large O RP1, WB-4 Large O, WB-5 Large O RPD, WB-6 Large O, WB-7 Large O RPD...]
How do I cross reference them? Any help appreciated.