The Vintage Wrist Watch Company has dated this piece to the 1910s.
The watch has a stem-winding ¾ plate movement which is working nicely.

Harry White was listed as being both a watch and chronometer maker. In 1899, following an Extraordinary General Meeting, it was agreed that the company would be wound up and Harry White was appointed liquidator.

However, it seems the company were trading in the 1910s because in 1913, records exist where H White & Co were one of several companies supplying chronometers for time trials at the Royal Observatory in Greenwich, with a view to supplying chronometers for the Board of Admiralty.

The watch itself measures 51mm diameter excluding the winding stem and the loop. The case is 14ct gold plated and was originally guaranteed for 20 years. The case has some unevenness to the back, and some surface marks, but overall acceptable for a piece from the 1910s.
The watch glass has light marks.
The signed dial is in lovely condition with pin-set blued steel hands, a subsidiary seconds dial and an outer minute track.
The watch will be sent in a new presentation box.
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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