Many years ago, and I doubt that things have changed much, casinos were used to "launder" money. What better way, no records, no cash registers, just money exchanging hands, and who gets "first count," the casinos.
Just imagine, owning a big restaurant, with no cash register. You count the money each night, well, you can see what might happen.
In Reno and Vegas, in those days, many, if not all, of the casinos were "affiliated" with a city, or an area. I do not profess to know all of the inner workings of how it all operated, I only speculated, and NEVER, asked any questions. You did your job, did what you were told, and always "looked the other way."
As a box man on a crap table, generally at the start of your shift, you signed the "receipt" from the drop (amount of money that the table took in, or dropped, with the paddle, into the money box) for the day or night before.
As a box man, you automatically kept a pretty accurate count of the money that got dropped, it was a force of habit. You kept track of how much a person "bought in," how much he walked away with, to keep in your head, how the table was doing for the shift.
If the floor boss came over, you could pretty well tell him that so and so lost or won, so much. It became a matter of routine, to keep a pretty accurate count of what was going on.
Occasionally, the amount on the "slip" would not reflect an accurate amount of the actual "drop." On a busy night, a substantial amount might be added. You just signed the slip, and went on with your business. How was I to know, I didn't do the actual counting of the money.
It was presumed, that the additional money came from someone, or somewhere, where there was a large amount of cash, unaccounted for, that needed a legitimate way to get back into circulation, without causing a lot of eyes to be raised.
It was pretty well known that this club was affiliated with Cleveland, that one with Chicago, etc. I have no idea of the workings of any of this, I know I just did my part, and signed on the dotted line when told to.
I never asked, "Why?"
I got promoted to a Floor Boss position, though.
