A thrower balances two pennies on two outstretched fingers and then tosses them 💶 high in the air to see how they land. The thrower wins with double heads and loses with double tails. 💶 Other men in the crowd cover his bets (bet against him), with a "boxer" handling the money and keeping track 💶 of the bets.
Two-up - Wikipedia
The promotion itself is very simple to understand. If the team you have bet on goes 💶 2 goals ahead at any point in the match you get paid out as a winner. Regardless of if they 💶 go on to win, draw, or lose the match. For example: in a match between Arsenal v Tottenham ,you place 💶 a back bet on Arsenal to win the match.