A device replacing a piece of money in a system making it possible to obtain a service not subject to retribution.

摘要

Device which replaces a coin when the latter serves as an instrument for procuring a service which is not subject to payment. The device is a key ring, one end of which serves to replace the use of a coin when the latter is regarded as an instrument serving to accomplish an act which is not subject to payment. The other end serves as key ring. The device does not operate on an apparatus employed as a collector of money.