Norwegian Norsk Seal

Norwegian Norsk Seal, Image & Found by Simon Bourne.
Found on Thames Foreshore with several others, ?mm.

Crowned shield bearing lion rampant holding axe, NORSK curved above // blank

The official arms of Norway.
Norsk is an official language of Norway.

This is most likely to be an official tax seal although NORGE for Norway would be expected as on their postage stamps.

See Norwegian Customs sealing tongs

Maybe our Norwegian viewers can help us out?