Numismatics
Specimens of various rare coins. A sovereign. Two sovereigns. A half-sovereign. Obverse. Reverse. Perverse. Coins not quite so rare. A half-crown. It is given away in error between two threepenny-bits. A sixpence. It goes bang. A small coin is shown, which gradually recedes into the borderland between visibility and invisibility. It is then seen to be a far thing.