Norway 50 Øre 1986K

Recently, I obtained a Norwegian 50 Øre 1986 with privy mark K. According to the Numista coin page, 1986 only comes with privy mark AB.
https://en.numista.com/catalogue/pieces1439.html

I didn't bother to scan the coin, but I did find some more 50 Øre 1986K on the Internet:

• http://www.catawiki.com/catalog/coins/countries/norway/3878861-norway-50-re-1986
  
• http://www.delcampe.net/page/item/id,308489070,var,Norway-50-ore-1986-K,language,D.html

Ucoin.net has the following listing, which differs from ours, Numista's:
http://en.ucoin.net/coin/norway-50-ore-1974-1996/?tid=6777

Can someone verify and adjust the catalogue?

Thanks!