Penny Blue Penny Blue The Penny Blue is frequently mistaken for a postage stamp of Britain. It is from a series of proof impressions which were made at the time Rowland Hill was looking at the new colours which were to be used for the stamps which were to replace the Penny Black and the original 1840 issue of the Two pence Blue. The decision to change the black stamp to red had already been made, and at the same time the colour of the ink used for the cancellations was to be changed from red to black. Although it had been
Penny & Giles Penny & Giles Penny & Giles (P&G) was a British engineering company in Dorset (former Hampshire) that made flight recorders (black boxes). The company was founded in 1956 by Prof William Alfred Penny and James Giles. It made high-reliability wire-wound potentiometers for aircraft in flight testing. In 1957 it made the first aircraft data recorder with magnetic recording on a stainless steel wire, known as a "black box". In 1963, the Ministry of Aviation informed the UK aircraft industry that all civil airliners would have to have flight data recorders. In April 1973, Penny and Giles Conductive Plastics received a