Ron - we see all the compression cased watches with a variety of parts - pushers, hands, dials etc and most prevelant on the GMT. I think it goes without saying that smooth/round pushers were standard on the early examples but who would ever know when they switched to fluted pushers but I they did at some point. Then there is the service issue and plenty examples must have gone back to Heuer at some point in their life when they may have had some parts changed as is common practice even today. My conclusive opinion is that its inconclusive.
regards
Paul
www.heuerworld.com