Hello everybody
A couple of days ago on another banknote forum (
Hrvatska numizmatika - Croatian numismatics) a user posted a picture (detail) of Croatian 20 kuna banknote, showing multiple errors in the micro-text. Instead of "
JELAČIĆ" (last name of the person depicted on the banknote) it spells "
JELAČIO", "
JOLAČIO", "
JELAČIC", "
JFLAČIĆ"; it also spells "
PAN" and "
DAN" instead of "
BAN" (his title).

My first thought was that whoever made the banknote had a very bad day or a major hangover, but the same type of "ERROR" was reported even on 5 kuna and 50 kuna banknotes. (
Hrvatska numiznatika blog)
Are those errors really errors, or are they new (and unknown) security features? This doesn't sound impossible - let's make a banknote with "invisible" error, and if a suspicious banknote is "correct", then it's a fake note.
What do you say? Has anyone heard about similar errors/features? It will be interesting to know it the same type of error/feature exists on other countries' notes.