【Salute to Queen Elizabeth II】
Hong Kong, Essays for the QEII Third Regular Issue of 1973. Three different sets of basic designs in large and small formats were submitted, each was denominated at $1. Eventually, Hong Kong picked Plan B to become the issued stamps – and three of them were taken out from the group and mounted on the cardboard, the forth is either lost or archived somewhere, and no longer in this group. Altogether 75 stamp essays. Stunning!