The product is a set of four stamps issued by the Royal Mail in 1989 to commemorate the 150th anniversary of the Royal Microscopical Society. These stamps are in mint never hinged condition and feature a multi-coloured design related to the topic of science. With Queen Elizabeth II serving as the monarch during this time, these stamps are a collectible item that showcases a significant moment in the history of microscopy and scientific advancement in Britain. SG 1453 - 1456. Combined postage on stamps.