A bulk coin dispenser bin holds nonaligned coin inventory even when removed from a base containing drive mechanisms and control electronics. A rotor assembly at the bin outlet retains coin inventory during separation, with a rotating disk dispensing coins through a discharge slot in a controlled manner. Optional adjustment of the rotor assembly's angular positioning changes the coin size/denomination dispensed by the bin. Uniqueness required to dispense coins of a given size/denomination is embodied in the bin, such that any base may operate with the bin without adjustment other than update of bin denomination in the dispensing system controller. Bin location and the combination of coin denominations dispensed may thus be readily altered within the dispensing system. Optional bin memory and optical level sensing improve inventory management functionality.