![A flag for a union between Sweden (blue field, yellow cross), Denmark (red field within yellow cross, white cross), and Norway, (red field, white cross, blue cross). 2nd Kalmar Union anyone? : A flag for a union between Sweden (blue field, yellow cross), Denmark (red field within yellow cross, white cross), and Norway, (red field, white cross, blue cross). 2nd Kalmar Union anyone? :](https://preview.redd.it/9f6uuji9fsi41.jpg?width=640&crop=smart&auto=webp&s=22e68c8e238b6463c6da41256be5008421d1bbef)
A flag for a union between Sweden (blue field, yellow cross), Denmark (red field within yellow cross, white cross), and Norway, (red field, white cross, blue cross). 2nd Kalmar Union anyone? :
![What flag is this? Blue and Yellow cross on a black background with a ship ensign. Spotted in Scotland. : r/vexillology What flag is this? Blue and Yellow cross on a black background with a ship ensign. Spotted in Scotland. : r/vexillology](https://i.redd.it/o1rv4yrsrgo71.jpg)
What flag is this? Blue and Yellow cross on a black background with a ship ensign. Spotted in Scotland. : r/vexillology
![Knightly knightly flag of blue and yellow colors with three yellow crosses waves in the breeze against the background of blue sky Stock Photo - Alamy Knightly knightly flag of blue and yellow colors with three yellow crosses waves in the breeze against the background of blue sky Stock Photo - Alamy](https://c8.alamy.com/comp/J36FDT/knightly-knightly-flag-of-blue-and-yellow-colors-with-three-yellow-J36FDT.jpg)
Knightly knightly flag of blue and yellow colors with three yellow crosses waves in the breeze against the background of blue sky Stock Photo - Alamy
![Waving flag of Sweden country. Isolated swedish blue flag with yellow cross on white background. Vector flat illustration 6994020 Vector Art at Vecteezy Waving flag of Sweden country. Isolated swedish blue flag with yellow cross on white background. Vector flat illustration 6994020 Vector Art at Vecteezy](https://static.vecteezy.com/system/resources/previews/006/994/020/original/waving-flag-of-sweden-country-isolated-swedish-blue-flag-with-yellow-cross-on-white-background-flat-illustration-vector.jpg)