The Countdown Control Panel No. 413 was produced by Lionel as a separate sale item only in 1962. This control was a modification of the control panel that was used on the No. 175 Rocket Launcher without the Gantry Control button. It could be used with any Lionel accessory or car that required an "on-off" button. Presssing the "FIRE" button completes the circuit and the "START" button begins the coundown dial.
Made of GRAY plastic with BLACK lettering and a RED countdown control dial, start and fire buttons, there are two binding posts on the bottom to connect the control. The count down timer has no effect on the electrical connection. There is one instruction sheet No. 413-11 dated 8-62 that is printed with BLACK ink on WHITE paper. The front page is illustrated below. Also shown are Page 2 and Page 3. There are no known variations.