Description: Inquiry for letter sent by registered and express mail from Zagreb to Irig 14.12. 1943. In the form is answer of post office Irig that says when letter have arrived and when it was delivered to recepient. Very rare postal document. In this case interesting also because it was used document from period of Kingdom of SHS, which was invalid in the time of Kingdom of Yugoslavia. That is only proof that forms for inquiry are rarely used during NDH, because of which post never printed it's own inquiry forms. Excellent quality. Guarantee of auction.