On a cold December morning in 1895, Harald Bing – director of the renowned Danish Bing & Grøndahl porcelain house – ordered his astonished workers to destroy the mould for a small blue-and-white plate produced to commemorate Christmas, so ensuring that the price for the plate would naturally increase should demand exceed supply. The piece, entitled ‘Behind The Frozen Window’, has been revered ever since as the world’s very first limited edition collector plate, and Bing unwittingly coined the popular phrase ‘breaking the mould’.