It doesn't make sense that "Braca Knaus" were making orders and medals for communists, because they where main mint in Nezavisna Drzava Hrvatska/ Independent State of Croatia, and their political opinions were not the same... I personally think that those are not "Braca Knaus" markings. The best explanation is that it stands for "Vojna Kontrola"... ...you can see it on various items...not only "partizanska spomenica"(You can see that kind of markings on yugoslavian sub-machine gun M 56...? So what? It would mean that Braca Knaus where making gun parts in 1956? ).