This square double-sided railway, school or factory clock was produced by Pragotron, in former Czechoslovakia, during the 1970s. The piece features a grey hammerpaint metal body, an iron hooks, a clear glass covers and a metal dials.The clock has been converted into a battery-powered clockworks and require two AA-batteries. The batteries are changed by unscrewing the screws on the side. Dimensions : Total height : 48 cm Width : 44 cm Depth : 14 cm Weight : 7,9 kg. This piece has an attribution mark, I am sure that it is completely authentic and take full responsibility for any authenticity issues arising from misattribution