A rare Solari Dator model 5 electric calendar flip/ticket wall timepiece, designed by Gino Valle for Solari di Udine, supplied by Gensign, London, 1960’s The interior with cast alloy dial frame forming the chassis fitted with electrically driven motionwork including complex arrangement of shunts, ratchets, locking levers and drive gears to control the various flip ticket carousels, the principal movement plate with SRC radial flip stamped trademark beneath serial number 50839, the dial composed of three panels with visible white-on black flip ticket digital displays for hours and minutes next to small trade label GENSIGN to top over day of the week to centre and date of the month to the lower panel, the whole behind cushion-shaped plexiglass cover set into a conforming white enamel painted cushion-shaped case with removable back panel incorporating power connector, start/stop switch and applied metal trade label GENSIGN, PROPERTY OF, GENERAL SIGNAL & TIME SYSTEMS LTD., 7 GT. PETER ST., LONDON S.W.1., ABBEY 5588/89, the right hand side also with repeat trade label for Solari, (day of month motionwork and set-up dial lacking), 34.5 (13.5ins) high; 28cm (11ins) wide. Solari di Udine, an offshoot of Ditta Fratelli Solari (Solari Brothers Company), was established by brothers, Fermo and Remigio Solari in Udine, Italy in 1948. It was there that Remigio Solari invented what would come to be called the Solari Board - a mechanical digital display that showed numbers and letters on a rotating flap system. For this innovation the company received the Italian ‘Compasso d'Oro’ (Golden Compass) award for industrial design. These information display systems have become the mainstay of arrival and departure boards displaying arrival and departure times in train and airports world over since the 1950s and 60s, with the first being installed at the Liège-Guillemins Railway Station, Liège, Belgium in 1956. The Solari di Udine range of wall and table timepieces were designed by the highly respected Italian Modernist architect Gino Valle and were most often used in semi-public environments such as banks.