Automated Bank Teller Deposit Window Patent Model. 1920s. Electronic patent model or salesman's sample for a bank teller window or bank deposit box with a vertically slatted window and drawer that moves through to both sides. Steel, brass, and wood, with cloth wiring, cotton carrying handle, and original batteries connected (one is a Sears-Roebuck Silvertone Radio battery). There are two buttons, with one likely controlling the window slats, the other controlling the drawer. 13 x 11 ? x 10". Not functional, but mechanism can be observed. Dust accumulation, corrosion, and signs of age. In-person pick up or third-party shipping is required.