J W BENSON LONDON TROPICAL SMITHS ROMAN NUMERAL DIAL DENNISON AQUATITE CASE SMITHS C 1953 mingold The model number is 82

The model number is 82

case number 10952

and the  gentleman's works Heuer timer engraved on the back with works details confirming as on the envelope employment as a test observer

Case measurement minus the crown: Approximately 33mm

numbered 67999

J W BENSON LONDON TROPICAL SMITHS ROMAN NUMERAL DIAL DENNISON AQUATITE CASE SMITHS C 1953 mingold The model number is 82J W Benson London Tropical wristwatch by Smiths in a Dennison Aquatite case of approx 33 mm in diameter with a chromed case top and steel screw in back. The thickness is 10. 8mm. Fitted with a 16mm tan buffalo leather strap. In excellent working order fully overhauled and a good timekeeper. This example has a 16 jewel movement with the sprung case ring and the rhodium or nickel colour balance . These c series JW Benson watches were made both before