The bookplate is a burin on copper (C2) by Portuguese artist Paes Ferreira. It was adapted from a drawing by Painter Almada Negreiros (1893-1970) made in 1957, originally to illustrate the front cover of a special issue magazine dedicated to H.M. Queen Elizabeth I State Visit to Portugal (18-21 February 1957).
The motto - «Honni Soit Qui Mal Y Pense» was added alluding to H.M. as Sovereign of The Most Noble Order of the Garter.
On the 50th Anniversary of Her Majesty’s memorable State Visit, the Museum of the Portuguese Presidency of the Republic has set up an Exhibition (see, http://www.museu.presidencia.pt/brightcontent_images/502_3.pdf)
Armorial bookplate, also a burin on copper by Paes Ferreira, after an XVIIIth c. engraving, with the arms of the Ducal House of Lafões, with an escutcheon with the arms of Bragança.
On Paes Ferreira see, http://www.bookplate.info/Bookplate/pferreira.htm