This is a 30 hour or 1-day New Haven Ogee shelf clock. 1875-80 seems to be the approximate period of manufacture for this smallish Ogee clock. The case measures 18 1/2 by 11 3/4 inches (47cm X 30cm) and the hour strike movement measures 3 1/2 by 5 inches (9cm X 12.7cm). So, its a … More New Haven – servicing a 30 hour spring-driven clock movement