To be fair.
There are MSC chips out there with Monte Carlo ink stamped on them.
Someone used an ink pad and a made up stamp similar to one, you order at office Depot to do it with.
I have notes on them somewhere and can't find them.

I talked to Ernest about them. We both agreed the stamp itself was more than likely real. A lot of the Monte Carlo office stuff was bought at an estate sale. We think the stamp was bought at a yard sale and used by a chipper to validate the MSC as Monte Carlo chips.
I have seen dice with the same stamp on the box.

As I told you in email MSC does not match with SS Monte Carlo except "Monte Carlo Ship" or
"Ship Monte Carlo" or "Monte Ship Carlo"