67.21. In addition to the initial and additional wagers, the player may place a supplemental wager, provided that it is indicated at the table. The supplemental wager must be $1 and must be placed on the designated area of the table before the dealer announces “No more bets”. It is a winning wager if the player’s hand is a Royal flush, a Straight flush, a Four-of-a-kind, a Full house or a Flush, even if the dealer cannot open. Winning supplemental wagers are paid as follows:
Royal Flush 100% of the progressive jackpot
Straight Flush 10% of the progressive jackpot
Four-of-a-kind $500
Full House $100
Flush $50.
A display board continuously indicating the amount of the progressive jackpot must be placed in such a manner as to be visible from each table permitting this type of wager.