Watchman's Tell tale Clock by Amano

Metal. Case size approx 6.3" x 4.8" x 2" high.

High quality clockwork movement. Made by Amano of Japan. Blick were the English agents. A special numbered key is kept at each point on a watchmans round . This is inserted and turned to print the key number and the time on paper tape. There is a mechanism to detect fraudulent interference