True, you can’t use them as legal tender but they do still represent the value printed on the note if you redeem them at the national bank (Riksbanken) in Mölndal. You might have notes from the late 19th century, like the 1 Crown note, or the almost square
50 and 100 notes with a stern-looking Gustav Vasa on or the impressive 10 000 Crown note. You can redeem them all. Once upon a time, Riksbanken required an explanation as to how you came to possess the notes. They don’t today; however, they can refuse to redeem them if they suspect that they come from criminal activities.
Riksbanken’s fee is 100 Crowns for the redemption of out of circulation notes, regardless of the amount. Read more at www.riksbank.se