6446. Riddareslag.

This would mean "Knighting" or conferring a knighthood (however you'd put it).

This card is credited: "A. B. Oscar E. Kulls Grafiska Konst-Anst. Malmö."

Ser. II Nr. 126.

The artist, E. Blair Leighton (1852-1922), was an Englishman known for this sort of painting:

en.wikipedia.org/wiki/Edmund_Leighton