Advert for the Post Card & Stamped Letter Public Supply Company's automatic postal box
Medium: Print on paper
Automatic post boxes such as this were placed on station platforms and streets in the last decades of the 19th century. A customer would insert coins in a slot at the top of the box, and then select their post cards, stamps, envelopes or paper. Machinery inside the box would deliver the relevant item to the retractable drawers in the box's front panelling.