Ovum for eggs : Ovum ensures healthy poultry / [J. Thorley Ltd.]

Diecut advertising novelty. Folded to initially show a black hen standing on a green field with other hens in the background and the slogan 'Ovum for eggs' in red above it on a white background, within an egg shape against a yellow background. This folds open to reveal 3 eggs on a black background. The central one has a white hen and other white hens against a henhouse and the slogan 'Ovum ensures healthy poultry' above. The left and right eggs complete the two halves that formed the initial image. The reverse shows the Ovum pack in black line illustration on a yellow background, 'Ovum : Thorley's poultry spice : Healthy poultry, abundance of eggs'.