Seal of King Eric of Pomerania, king of Denmark, Norway and Sweden.
Illustration by Professor Julius Magnus Petersen (4 Sep 1827 – 1 Feb 1917).
circa 1882 <div style="display: none;">date QS:P,+1882-00-00T00:00:00Z/9,P1480,Q5727902</div>
Illustration by Professor Julius Magnus Petersen (4 Sep 1827 – 1 Feb 1917). Image from Henry Petersen: <i>Et dansk Flag fra Unionstiden i Maria-Kirken i Lübeck</i>, Copenhagen: C. A. Reitzel, 1882, page 11. Own scan.