Blank greetings card with envelope featuring:

Castor & Pollux (Sir William Horne; Thomas Denman, 1st Baron Denman) NPG D41158

© National Portrait Gallery, London

by John ('HB') Doyle, printed by Alfred Ducôte, published by Thomas McLean

Card size: 125mm x 175mm

Images are printed in their original proportions, within a white border.