The images used on the posters are details from well-known portraits. The colour one is Plate I.15, the monochrome is I.21b from BGA Bd.IV 1/1. According to the text in that volume originals are in the ‘National Museum’. Perhaps in its new incarnation that is indeed true. Can anyone verify or confirm that these portraits are actually and currently on public display, and where? The colour painting is (I think) unique, while the lithograph may have many copies.