Posting some of the known varieys/errors featured on the krona.
I don't collect varietys but have stumbled on a few. I have a few more but not all varietys there is in this series.
In 1942 a new design in the krona was introduced but that will not be featured here.
Here are five different examples

First out is the 1916 6 on 5. The 5 can be seen top left on the 6

1939 Cracked G

1940 small G

1940 Large G punched on small G

1941 1 on 4, 1 was punched over the 4 on the last 1, a part off the 4 is visible middle right and left on the 1

And a small bonus I found another when I put the coins back.
1916 three crossbars on the makers mark. The W has 3 crossbars on top instead of 2

