London Club
Denominations above $5000 are almost never encountered by the general public; their use is usually limited to "high limit rooms" where bet sizes are much greater than on the main floor. Casinos often use gaming plaques for these denominations: These plaques are about the size of a playing card, and must be marked with serial numbers. The greatest value placed on a plaque to date is $10 million, used at the London Club in Las Vegas.