The Vintage Wrist Watch Company has dated this piece to the 1910s.
The clock has a stem-winding movement which is ticking away nicely.
The movement is signed Octava Watch Co, Switzerland, 15 Jewels, 2 Adjustments, USAP 816321 which relates to the American patent filed in 1905 by Hartmann Franktisek (the inventor) and Josef Oliak, on behalf of Octava Watch Company.

The clock hinges into its silver case; the case is stamped Sterling, R&B Co, 5282. When closed, the case measures approximately 3" x 3¼". The case is showing some signs of age with some areas of unevenness and some outward 'dings'. The lens is in good condition.
The dial is signed 8 Days, Swiss. There is a mark by number 10 some damage and a subsequent repair next to the number 7.
FREE WORLDWIDE SHIPPING
The Vintage Wrist Watch Company has dated this piece to the 1910s.
Specialists in antique and vintage wrist watches and pocket watches
You can view the stock and full dealer information on the The Vintage Wrist Watch Company Profile Page