BILLERBECK/NIENABER No. 06 precision pendulum clock, Germany around 1990, long case with removable upper part, black piano lacquer, varnished brass-dial with digital hour at 6, small second at 12, blued steel hands, rectangular brass movement on polished base, Graham-escapement with ruby-palets, duration of run approx. 10 days, 8 mm Invar-second- pendulum, heavy cylinder-shaped pendulum lense, measures approx. 192 x 33 x 22 cm, condition 2-3