Rare SBS feintechnik clockwork. Marked 661 and 66/064 PL57 W10 It is the first time I encountered an SBS clockwork with the pendulum on the front of the clockwork, it has no chains but ropes. Which are wind up with a key also on the front of the clockwork. The clockwork is overhauled has had new bushings and is in excellent running condition. Comes with the original hands. Used item signs of use.