This signed miniature by Alexander Cooper forms an important addition to the group of miniatures of the exiled King and Queen of Bohemia produced by the artist during the 1630s. Some of these are on the same diminutive scale (see for example the chain of portraits on a bracelet of members of the Bohemian family; formerly Bode Museum, Berlin repr. J. Murdoch, J. Murrell, P. Noon and R. Strong, The English Miniature, New Haven and London, 1981, p. 121). Many of these share certain features which were by then becoming archaic including the circular format of the present miniature, and the brilliant blue background, but which link Cooper very clearly with the tradition of Hilliard and Oliver. He was, according to two early sources, schooled in this tradition of miniature painting by Peter Oliver, rather than by his uncle, John Hoskins, in whose studio he was brought up with his brother, the better-known Samuel Cooper.

Alexander Cooper's role as a disseminator of what was seen as the typical art of the Protestant monarchy in England throughout the Northern Courts of Europe (for he worked not only in The Hague, but also in Sweden and Denmark) has been seen as crucial in understanding the cultural and political significance of this art form in the early-seventeenth century.