Bidspirit auction | 2 perpetual advertising calendars,

2 perpetual advertising calendars, - 2 perpetual advertising calendars, GDR ca. 1970s, wooden body with plastic. ''Gleisbaubetrieb Bitterfeld'' and ''VEB FörderAnlagen- und Kranbau Köthen''. rubbed, each approx. 36.5 x 24.5 cm