A fine Swiss Art Deco silver tennis-themed open-faced pocket watch

A fine Swiss Art Deco silver tennis-themed open-faced pocket watch by Eberhard & Co, Chaux-De-Fonds,
the dial with Arabic hours, spade hands and subsidiary seconds dial, the reverse enamelled with an Art Deco male tennis player, with suspension ring, case back numbered 28188, Swiss silver hallmarked .925, total weight: 59.5 gr., dial diameter 42mm., case diameter 45mm., movement working, minor wear to dial and case