Physical description

Small creamy white empty envelope with no writing on it. On the back flap it has crest of the Bendigo Regiment. It has a shield with a shovel and pick in the top right corner, a bunch of grapes? Below it and in the top left it is unclear what it is and the bottom left is an animal? Underneath is 'Honorem custodite'. On the left of the shield is a horse and on the right is a lion. Both animals are standing on their hind feet with their front feet resting on the shield. Printed in blue. The edges of the flaps have a pattern cut.