Andrew Nethercott Antiques has dated this piece to the 1920s.
Import marks for Glasgow 1920 sponsors mark CN for Charles Nicolet, a partner of Stauffer & Co.,

the London branch of the Swiss firm of Stauffer, Son & Co. of La Chaux-de-Fonds.
Stauffer and Co, importers of IWC watches and movements
The watch case houses its original Swiss IWC cal. 57 H5 movement marked PEERLESS S&Co for Stauffer and Co,

Serial number 723920 Swiss Patent No +55231
Retailer marked dial and inner case edge Spiridion & Son Cardiff
The movement winds fully, sets, runs well keeping good time.
The watch is in very good condition noting a small dent to the edge
Diameter 49mm or 1,15/16" weight 84.6 grams
Andrew Nethercott Antiques has dated this piece to the 1920s.
Works of art, collectables, scientific and decorative antiques from the 17th - 20th century
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