I have a problem with collecting- It takes up time and money and space. I've come up with a way of dealing with some of these collections and that is to document them and then let them go.  It ties in with an idea I had whilst doing my collections project about sequential collecting. A good example might be the motor enthusiast who has only limited resources and so might decide to own certain cars in succession- a Jaguar E Type then sell it, an Aston Martin DB5 (a step up!) then sell it. I have neither the money or space for very many things, least of all cars- these coins took my fancy. Little metal objects I like and engineering and scientific legends I also like. These coins have now been released back into the wild.