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Comparison
I'd be surprised if there was a line-in-the-sand date or model to mark the change between crown types. And as Bill said, some watches may have been retrofitted with the screw down crowns after the fact. The good news is that you should be able to tell exactly which type of crown was used just by
looking at it. The Naiad crowns were flat compared to the more
bullet-shaped screw down crowns. As you can see in the shot below (from a Sept 2006 post by "Elton Balch" on another forum), the difference is obvious, with the Naiad on the left and the screw down on the right.
Regards,
Alex
Just a quickie for the experts here
Hi all, I'd just like to know the answers to a couple of questions relating to the Seamaster 300 diver's watch: I've been looking at a 165024 and was amazed to see that such a divers watch didn't have a screw-down crown so which model was the first to hav...
Some replies
Hi regarding the strap, the SM300 165.024 came with either a steel band (7912,1039 or 1506 usually) or a leather strap. This is confirmed by several extract from archives which I have. The NATO strap never came with anything, but perhaps in those SM300s b...
Thanks Franco......
The example I was looking at was a 1966 so that fits in well - a nice bit of info and much appreciated Cheers Andrew
hmmm.... Never seen a screw down crown on a non-date
Hi Franco Over the years the only Seamaster 300 with screw down crowns I have come across are with DATE and the Military issued non date. I would assume during a factory service the crown and tube could be swapped out. If after 1967 or 1968 all Seamaster ...
Comparison
I'd be surprised if there was a line-in-the-sand date or model to mark the change between crown types. And as Bill said, some watches may have been retrofitted with the screw down crowns after the fact. The good news is that you should be able to tell exa...