He told me that it was from a propaganda movie aboard that ship and it was either MHJ boys or actual KM sailors that wore it in that film.
I had asked Dani about the Jakko tally and he told me, also many years ago, that it was a film tally but does he actually know every single MHJ unit that existed? I doubt if he would say that he did, but it was his opinion that it was a film prop. I never discussed it with Bernd, but I will send him an email about it now. John