Rubyhorse

"That'll be 500 rubyhorses, sir." -The first use of Rubyhorse's in Bombot: Origins.

Rubyhorse's are the main currency in all of the Bombot series. The first time they are introduced is when Jasperius buys a drink at the Inquisitorial Tavern. On the right side, you can see a picture of a coin worth 100 rubyhorses.