as opposed to taking the full 57 cents change from the cashier, bob opted to leave the nickel and two dimes behind and pocket only the comfortable coinage
the preferred return of metal coinage for a given transaction to keep one from being bogged down with unfavorable denominations
"as opposed to taking the full 57 cents change from the cashier, bob opted to leave the nickel and two dimes behind and pocket only the comfortable coinage" What is the definition of "comfortable coinage"?