Really interesting comments so far : this is what I know, definitely used by the
Norwegians, has a plate on the gearbox and on the engine to say they have been rebuilt,
by the Norwegian armed forces,there is a Norwegian shipping tag, once in the uk went straight to British army museum where it stayed for about thirty years, it was part of an exhibition called stuck in the mud, something to do with an African campaign,
no one at the museum seems clear how it came to the museum or if they altered it at all
i guess the key is to talk to the Norwegians