Pocket Calender Watch without Case, 1900-1950

Made:
1900-1950 in Switzerland
Swiss split seconds chronograph, 1900-1950

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Swiss split seconds chronograph, 1900-1950
Science Museum Group
© The Board of Trustees of the Science Museum

Swiss split seconds chronograph, 1900-1950

Details

Category:
Time Measurement
Object Number:
1930-158
Materials:
brass (copper, zinc alloy), steel (metal) and enamel
Measurements:
overall: 13 mm x 51 mm x 78 mm, .075kg
type:
calendar watch
credit:
Mr. H. W. Ravenshaw