My Qb has one of those^^^^ Good eye way2wyrd
*From Pin Wiki :
http://pinwiki.com/wiki/index.php?title=EM_Repair#Delay_Relay
4.2.4 Delay Relay
Bally delay relay
Bally used a special relay in the 1970s to provide a time delay circuit. The delay relay uses a #455 flasher lamp in the lock-in circuit to generate the time delay. The lamp is in series with the normally open lock-in switch. When the relay is energized, the lock-in switch closes and the lamp lights. When the lamp filament heats up and the lamp flashes off for the first time, the open circuit releases the relay.
The flasher lamp is required for correct operation of the delay relay. Using a standard lamp will result in the relay locking on once it is energized. If the lamp is missing or burned out the relay will fail to lock-in, resulting in the relay energizing momentarily and no time delay. Note that the 6.5V lamp is powered by the 50V coil voltage in this circuit, so the delay is shorter than the normal flash delay. If the delay is too short or too long, the Bally game manual recommends experimenting with different #455 lamps until the desired delay time is achieved.
The picture to the right shows the delay relay from the "Over The Top" buzzer circuit on a 1976 Bally "Hokus Pokus" game. The #455 lamp is pointed out in red. ( for photo go to website ^^ listed above)
Bally delay circuit
The following circuit diagram shows the control for the delay relay as used in the "Hokus Pokus" Over-The-Top circuit. The right two circuit legs are the enable circuits for player 1 and player 2 respectively. The relay is energized when the "9th position" switch on the player's 10,000 point score reel is closed and the end-of-stroke switch closes. That is, when the score rolls over from 90,000 to zero. The left circuit leg is then enabled by the normally open switch on the delay relay itself, lighting the time delay lamp.