Blazon: Vert a fess ermine of five spots between in chief an eagle displayed, wings inverted perched on a thunderbolt fesswise between two garbs or and in base on water barry wavy argent and azure a Viking ship of third, sails of the fourth
Crest: On a wreath vert and argent on a mount an oak tree proper fructed or bound thereto by a chain proper two anchors in saltire of the third
Supporters: On the dexter a Lincolnshire Red Shorthorn Bull and on the sinister a Lincoln Longwool Ram both guardant proper, each supporting a croizer or
Blazon: Gules on a pale between two serpents erect argent a dexter wing of the field, surmounted by a triple mount in base proper
The arms were originally granted as shown by Ferdinand I, Holy Roman Emperor sometime between 1522 and 1529. It was re-granted by Maximilian II, Holy Roman Emperor in 1569. The color combination is likely inspired by the Austrian coat of arms, but the origin of the charges is unclear.