Bomb jack never had a dedicated cab AFAIK. It was a conversion kit. Much like f.i. Bubble Bobble.
It's definitely not a Pac Man i.e. Midway coin door. These have rounded edges and look like this:
What it is, it's an coin door as used by Atari US macufactured cabs.I'm not saying it _is_ an Atari coin door, as it was used on lot's of other brands cabs and pinball machines too.
At first sight they look like the European (Irish) coin doors, but they are not exchangeable.
The US version can be recognized by the right angles at the corners of the frame. The Euro coin doors have rouned angles and often aluminium (unpainted) look. Also the place for the sticker is much larger on the Euro door.
American version on Centipede cab:
European version on Centipede cab:
