It doesn't appear to be a specific model (if it was, it would probably be written on the dial e.g. 'Flagship'). Looks like 1950's; the date of manufacture can be established from the serial number on the movement.
Thanks both. Having 'googled' around a bit I think you're right, it probably does date from the 50's. I can't find a match though neither for the dial or the strap.
I'll take it to a dealer and get the back removed and get the serial number as suggested.
