Hello,
I have a question about deleting or modifying banknote prefixes (the date line). Is it possible to delete some prefixes if there are users who already added them to their collections? I'm asking specifically about this banknote. 100 Korun - Czech Republic – Numista Some users should have a D prefix for the 1995 banknote, but the thing is this prefix doesn't exist. 1995 version was only printed with a B prefix, C and D prefixes were already printed with a year 1997. I guess that some users just chose a wrong year when they added D prefix for 1995. So my question is if I can delete this line, even though some users already added this variety to their collection. I would really hate to make a mess in Numista collection statistics or something like that.
Just for the reference, combinations of different years and prefixes can be found in any Czech banknote catalogue, like this one Papírová platidla Československa, České a Slovenské republiky 1918-2020 – Numista
Thanks for the answer