I bought this pair of C de Vs in a bits-and-pieces shop (in Australia). They show Edward, Prince of Wales and Princess Alexandria, his fiancee, and were taken in Paris in 1863 by E. Desmaisons. They both are in good condition except for some minor foxing. The identical Carte of the Prince is in the collection of the National Portrait Gallery (London).
Are they unusual or are they just the usual type of mass-produced, collectable C deVs of the time?