I'm showing today a tray of wood grained mechanical pencils. All were likely made in England The pencil materials are mostly hard rubber. A few are made of the plastic material of the day. All were produced during the mid 1920's through the late 1940's The lead mechanisms are twist activated excepting for fourth position from the right. That pencil is top button activated. For sizing comparisons the display box is eight inches across by six inches in height Position second from the right features two like material containers for extra leads.