A medieval ship flag captured by forces from Lübeck in the 1420s showed the arms of Denmark, Sweden, Norway and Pomerania. At the time, Denmark, Norway and Sweden were united in the Kalmar Union. The saint accompanying the Virgin Mary and infant Christ is Saint James the Greater, identified by his scallop shell emblem. The flag was made of coarse linen. All figures and heraldic insignia were created using oil-based paint.