71/2 diameter - full brass case, glass front screws on, completely enclosing the clock face face has roman numeral numbers, full minute and hour hands, and a smaller central minute hand read "US NAVY - 210" on the face on the back are the following - etched into the brass back is the number "35555" what appeared to be printed or stenciled info: PEN 12-43 39

@ 7 1/2 inches round