Per my previous reply here, couldn't find any examples in my collection to compare with. The 5k with perfs on the top only is still mysterious. Regarding stationery cutouts, I thought it interesting that I recently obtained what was represented to me as a Scott P1 (newspaper stamp)... compared to other Hungarian newspaper stamps in my collection, it is stiff paper, very sharp engraving and was cut very close to the edges. Ones in my collection are not cut so close. Suspecting it's a stationery cutout, but this is something not as easy to tell from images.
Hi Tore99 I looked at the stamps for the newspapers and they have the same kind of paper (and yes it can be called stiff paper - I haven't met this term so far) as the previous stamps. What is mysterious about the 5 Kr stamp? The 10 perforation?