Soon after the Italian capitulation and withdrawal, between September 13 and 16, Italian stamps and stationery postcards found in post offices and retail kiosks in Šibenik were overprinted with rubber cachets bearing the initials "N. D. / H." for Nezavisna Država Hrvatska (the Independent State of Croatia). Non-philatelic mail using these stamps and stationery is very rare, with only a few known items. Furthermore, until now, I have never seen an item from the second usage period, which lasted from November 17, 1943, to March 14, 1944.
First Šibenik local issue, Italian stationery, overprinted with "N. D. / H.", sent from Šibenik (29.II.44) to Slavonska Požega. Censured in Zagreb (CENZURA 51). Novak correspondence. Ex Kugel. To my knowledge, this is the only known instance of non-philatelic use during the second usage period.
Stationery were overprinted with the same rubber cachets used for overprinting stamps.