Hello, I'm a new user to this site, I've just acquired a Heuer T-25 Raylle stopwatch which is reputed to have been removed from a obselete Hawker Hunter jet fighter. Out of interest I was wondering when these timepieces were manufactured in addition were they common on military aircraft? Although the timepiece is not for sale I would be interested to know what they are worth on the second hand market. Many thanks in anticipation for your help.