S SMITH & SON 9 STRAND LONDON SILVER POCKET CHRONOGRAPH
S Smith & Son 9 The Strand London imported minute recording silver pocket watch chronograph. With London silver import marks for 1913, the year before the outbreak of WW1. The case diameter is about 51mm. Condition- working, functions correctly, keeps time. The minute recording function is a gradual one not an interval jumper. The dial is good. The crystal is marked by a sticker and is thick bevelled glass. Note that the first image is taken without a crystal in place. The case has some marks especially where the opening nibs are, and dent and scratches to the rear.
The case is probably Swiss made and the Sponsors mark is the well known importer of watches G.D standing for George Charles Dimier of Dimier bros, according to Priestley.
The model number is 133 production number is 858. Described in the original catalogues as being "Strong Hallmarked Silver, or steel, Plain or engine turned cases, Crystal glass, Lever, Compensation balance, Overcoil Spring, Ruby jeweling. carefully timed with and without Minute Recorder running ".
This example is marked also N.M for non-magnetic a feature which would have cost an extra Guinea, in addition to the normal % guineas and probably refers to the hairspring which in addition to having an overcoil is of alloy and not blued steel. The hands seem to be gold. The movement is stem wound and nail set. A copy of a catalogue page featuring the watch will be included in the sale. The 131 was recommended for use by engineers and electricians, a forerunner to the 20th century IWC Ingenieur wristwatch?