1941. Multicolored, salmon coloured ”A.R.” form (Obr. P. br 5, 1931, printed in Ljubljana), for a registered letter between two District courts, with bilingual (italian + slovenain) courts district cachet (Italian Kingdom, Province Lubiana, District Court KOSTANJEVICA) in red, postmarked ”KOSTANJEVICA NA KRKI, LJUBLJANA, 4.X.41” addressed to BANJA LUKA, CROATIA with BANJA LUKA 11.X.41 arrival and corresponding Banja Luka Distrct Court cachet in violet adjacent. At reverse additional BANJA LUKA 11.X.41 and postman's signature. Scarce.