Doctor Johnston, I presume? Our handsome, heavy antique door plaque was made for the offices of a Doctor Johnston. This piece of medical memorabilia dates to the 19th century and would have been mounted to the exterior of the doctor's offices, presumably on or next to the door. The plaque was made to be sturdy and strong. Made of rich, silvered brass, its original hardware remains intact on the back. 7 1/2" x 3 3/16" and in beautiful condition.