HOW TO IDENTIFY DIFFERENT WATCH CASE BACK DESIGNS AND ENGRAVINGS NO FURTHER A MYSTERY

I believe XX is a good watch And that i’d like to have a single. It's possible I’ll place the purchase on keep for the year or two and see should they arrive up with any other editions" If that is the test for what would make a great subject watch – and It truly is pretty much as good as any I've listened to – the pilot's-watch-cum-subject