1943 5000 Kuna Croatia

Can anyone find an explanation for the addition of P#13b on this page

N#209020 

Nothing to be found on PMG or on Banknote Museum, just one variety …

Krause only has 

a. Issued note, 7 digit serial #
s. Specimen. Red overprint: UZORAK

 I have lots of Croatian bankotes from that period, 100 kuna, 1000 kuna, 5000 kuna. There were some special banknotes that were not released into circulation at all and are very sought after. Usually sold at auctions for hefty money. Normal ones in UNC condition usually go for 10 - 20 euros except 500 kuna which is around 100 - 200. 

For your banknote, i think the difference may be two letter serial prefix. I know 5000 kuna banknote “Kupresanka” P14  from 1943 has that b variety. I will check with my Croatian friend for P13. In 1943 banknotes were printed like there was no tomorrow. P 14 had only 6 digits in serial and P13 had 7. Very likely they had some two letter prefix banknotes in backup. These would probabily cost more

What ever other catalogs have the Pick catalog short is used in the year line comments here (P#) and this has only the two I posted above. So either the b should be changed to an s or an other reference should be used with these particular a and b.

Yeah. Agreed. Even P14b is very rare to find at auctions but still they exist. I found one at Numizon. I havent found P13b on auctions, maybe in Croatia people have them if they exist. Specimens i do have, as well as regular 5000 kuna banknote P13. But keep in mind that these notes were massively printed.