Moving money across international borders

This is purely hypothetical:
What if you won a large sum of money in a casino in Malaysia then flew to Vietnam? It came up in conversation and everywhere my friend and i looked for an answer, none was given.

I know that you are only allowed to bring in a certain amount of money, but if you won, say 10,000 dollars what would they charge?
Do you get a ticket from casinos as proof? Otherwise, how would they know it was won and not some kind of laundering/illegal business?

Sorry if this is a waste of time for everyone, but i think it would be an interesting delema.

thanks
db

I don't think the ticket from the casino would be any good, say you walk into a casino with 100K play a few hands and walk away with 99K with a receipt, you have a legit receipt for where you got the money you might think.....most casinos would be well aware of this as a money laundering activity, ok they may not care in Malaysia or vietnam.

You could western union the money and collect in on the other side, don't know what their limits are though, it might not be that high.

John Gilligan used this method to launder a lot of his money, he lost obscene amounts gambling but whatever he won was clean as he had receipts.