The International Association of Amateur Heralds

Grand Duke Jean of Luxembourg, who abdicated in 2000, has died at the age of 98.



G-D Jean's arms as a stranger Knight of the Garter.

Note that G-D Jean's quarters are the reverse of his son's.



There is an explanation here: http://luxembourg.public.lu/en/publications/f/ap-armoiries-gdl/ap-armoiries-gdl-2006-FR.pdf

Perhaps someone who is au fait with the royal houses that practice abdication (PS: who can name them all?) can tell us whether the former monarchs/Grand Dukes maintain undifferenced arms, or whether they have some form of difference. This would have been unnecessary in G-D Jean's case as his son fundamentally changed his arms for dynastic reasons.

Dutch former monarchs revert to the arms and personal banner they were granted before being King (Queens are also regarded as being King, in State law sense) they also revert to prince or princess as the title they have.

Edward VIII of Great Britain (or should that be VIII of England, II of Great Britain?) took a completely new title (Duke of Windsor, rather than his former titles of Prince of Wales, Duke of Cornwall etc.) Assuming Wikipedia to be correct, he took a new coat of arms, i.e. the Royal Arms with a crown on the centre point on his label of 3 points. His coronet was that of a prince (but without the single arch that he had previously used as heir apparent.) In other words, his arms reflected the fact that he was the son of a king, with just the crown on the label alluding to the fact that he had been king himself.

https://en.wikipedia.org/wiki/File:Coat_of_Arms_of_Edward,_Duke_of_Windsor.svg