Industrial Office Wall Clock from Pragotron, 1970s

Pragotron PPH 413 is a type of indoor secondary clock. Was produced during the 1970s in former Czechoslovakia. Clock face with white plastic numerals is made from aluminum. Diameter is 43 cm. The piece has been converted into a battery-powered clockwork and requires only one AA-battery. 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