Date is given as 1981 for https://en.numista.com/catalogue/note212492.html. Enlarging the photo indicates date is 1961 (law). Dates cannot be reported to referee for change via usual form. Check of SCWPM indicates actual date is 1981. 1981 does not appear on note as far as I can see. Would it be better reported as ND with 1981-1981 as range of dates? Wow, someone made my original requested change to 1961 already before I discovered the printing information. Sorry!
Sulfur, You're way too fast and I jumped the gun in my original request and only investigated further when finding the 10 kronur notes as well as the 50. Still, I have remaining questions.
I don't think things are quite as simple for this issue - Bank Note Museum lists this series as being issued from 1981 to 1986, even though the notes are dated 1961. Here's the link to the page on Bank Note Museum:
I would like to see it as (ND) 1981-1986 for the 50 Kronur and the 10 Kronur left as is. Bank Note Museum actually mentions only the 1961 date (designated with an L preceding for law) on the actual page picturing notes and makes no mention of any 1980s dates. Thanks for your comment.