Industrial Pragotron wall flip clock IPJ 0612 made in Czechoslovakia in the 1980s. Metal frame with a flip mechanism inside, covered with glass. Secondary clock of that type was used in a public places, such as railway and bus stations, schools, factories etc., and controlled by minute polarized pulses from the master clock. We've converted them and added an independent pulse driver, so it's fully functional by itself. There's a wheel on a side with which you can set the right time. Completely cleaned, very good condition, minimum signs of use.