My understanding is just from the Pac Man series cocktail cabs have 2 different sized control panels.
Pac Mans control panel was 11'' which can be referenced from this picture from
arcadeshop.com
Also if you reference the Pac Man drawing package
here you can see that on page two there is a detailed drawing that shows the total width of the control panel assembly is 12 1/2''. This includes the two control panel sides that are 3/4" a piece and the internal metal control panel that is 11".
Ms Pac Man is a little different. Her control panel only comes in at 9". See below.

Just by guessing, and I feel I'm light in my estimation, it looks as if your CP is over 13". Just on the inside.