I just wanted to add some info to this discussion. I do not want to mix into the discussion whether this particular watch is original. Just wanted to let you know that I visited a Dutch clock& watch tradeshow 1 month ago ( I wrote a report to the forum then)where I saw a Polish couple selling lots of Heuer Casings and nos-looking dials ( Autavia, Montreal etc). When I asked a Heuer expert at the same Show he told they were fakes and made in Poland.
I read that Seamus bought the watch in Poland, so just wanted to let you know.
I know it doesn't add anyhing to this discussion but just thought it may be of interest for you you to know.
Ron