J W BENSON LONDON TROPICAL SMITHS ROMAN NUMERAL DIAL DENNISON AQUATITE CASE C 1950 9ct This model was sold as

This model was sold as water resistant as it has a case neck for the crown and a space for a gasket

This example has a 15 jewel movement with the cruciform case ring and a mono-metallic balance with screws

These dust caps are close fitting with an allowance for the mainspring barrel protrusion

These two watch types  require selected and expensive replacement parts so the cost of servicing is higher

Constantly In Search Of A Means To Slim Down The Watches The 100 Was A Better Idea Than Using The 8 3/4 Ligne

J W BENSON LONDON TROPICAL SMITHS ROMAN NUMERAL DIAL DENNISON AQUATITE CASE C 1950 9ct This model was sold asJ W Benson London Tropical wristwatch by Smiths in a Dennison Aquatite case of approximately 33. 1mm in diameter with a chromed case top and steel screw in back. The thickness is 10. 4mm. Fitted with a parallel 18mm vintage look strap. In excellent working order fully overhauled and a good timekeeper. This example has a 15 jewel movement with the cruciform case ring and a mono metallic balance with screws. These c series J W Benson watches were made