The Society has always encouraged members to exchange their spare tickets with other members to their mutual advantage. This provides an almost cost-free method for collectors to enhance their collections.
Exchange Pools: Members send in spare tickets to the Pool Organiser, who then sends back an equivalent number from the Pool. Many popular transport modes / types of ticket have their own Pool.
Exchange Circuits: Books of spare tickets are sent from member to member. Each member takes what he wants from the book and replaces them from his own spares. Again, many transport modes / popular types of ticket have their own Exchange Circuit.