If you look at all my posts you will see the 1st letter of every word in all titles are capitalized. In this case, I used the original title and added one word, my way. Was not shouting.

No, hard count can not catch all foreign coins. I have seen cage cashiers sorting for foreign coins also.

Foreign coins can be played. They are not supposed to be cashed at the cage (by gaming regulation). If you tell a cashier you got it out of a machine, I am sure most will cash it.
Gaming regs say all foreign coins and chips must be culled. I am sure some get through the check points.