1) Treasurer 
person skilled in the science of financial exchange
• (n.) A banker; a money changer or broker; one who deals in bills of exchange, or who is skilled in the science of exchange.
Cam'bist noun [ French cambiste , Italian cambista , from Latin cambire to exchange. See Change .] A banker; a money changer or broker; one who deals in bills of exchange, or who is skilled in the science of exchange.