8-day time and strike on tuned rods ('double strike').
Dimensions
31.5 H x 13.5 W x 6.5 D in.
2nd Issue; 1920-25 wall catalogues and 1928; smaller pendulum bob than 1st Issue. Two pendulum-bob sizes seen: the large bob is typical of the 1st issue, the small bob likely transitional toward the 2nd.