Two penny blue Two penny blue The Two Penny Blue or The Two Pence Blue was the world's second official postage stamp, produced in the United Kingdom of Great Britain and Ireland and issued after the Penny Black. Initial printing took place from 1 May 1840, and in all 6,460,000 were printed from two plates until 29 August. Officially the stamps were valid for postage from 6 May but were only available from 8 May. It was first sold to the public at the London Inland revenue office on 6 May 1840. Except for its denomination, the design is exactly the same as
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