I've long been fascinated by the predominantly, though not exclusively, Catholic practise of printing Holy Cards: small cards with illustrations, usually of saints, and prayers on the back relating in some way to the image. As a bookseller you find these constantly tucked between the pages of Bibles and Prayer Books. Usually they are either rather modern and graphic or very old-fashioned and rather kitsch. Both styles have their appeal but I've never seen one like this before which sort of falls between the two, exuding an almost retro style. Clearly it is a wartime production and that's confirmed by the 1941 copyright date. The prayers on the back, perhaps strangely, are "A Perfect Act of Contrition".