A currency/credit card receiving unit (10) is attachable to a vending machine or amusement device (12) with first and second spaced apart flanges (32a, 32b). One of the flanges is fixed relative to the unit (10). The other flange is moveable and is attachable to the unit (10) in a secure region to clamp the unit (10) to the respective vending machine or amusement device. With this configuration all of the retaining fasteners are located in a secure closed region.
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