Coat of arms sent from France to England in July 1559, laying claim, in heraldic form, to the English crown.  The dexter side (left as viewed) is the dimidiated arms of Dauphin Francis, as King Consort of Scotland, quartering his arms as Dauphin (France quartered with the Dauphiné) with those of Scotland, over all an inescutcheon of England  (which consisted of France quartering England to reflect the English monarchy's historical claim to France). This impales on the sinister (right) side the arms of Mary, Queen of Scots as claimant to the English crown, Scotland quartered with England.
Representing original artwork, British Library, Cotton MS Caligula B X/1 ff. 17v-18r.https://blogs.bl.uk/digitisedmanuscripts/2021/10/elizabeth-and-mary-royal-cousins-rival-queens-curators-picks.html
This file was derived from:

 Royal Arms of the Kingdom of Scotland (1558-1559).svg: 
Royal Arms of England (1399-1603).svg: 
Arms of Scotland (1689-1694).svg: 
Royal Arms of England (1470-1471).svg: 
using them respectively for: dexter side; inescutcheon on dexter side; sinister side; on sinister side lowest lion in the point at bottom of shield
Agricolae