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Welcome to OF, kerrr.splat and yes I've added it. Thanks.
You've got some new numbers since the last calculation, how many do you reckon are out there based on this? 馃榾
On Chrono24 it's mentioned that this model has a screw down crown. I tried on my watch but it seems it is not a screw down crown. Please let me know if it's a screw down crown or normal push in crown. Thanks anticipating a quick response.
Another quick query. When I wind my watch it's bit hard to wind and has a sound as well compared to my other watches like Patek Calatrava and JLC. Is it Normal? Regards
Thanks dear for a quick response. I wonder how people post wrong information on a good selling site. Thanks again. Regards
Chrono24 isn't really a selling site, more of an indexing system of what's for sale on various forums, websites, etc...just do your due diligence as you would do on any watch you intend to buy and if not sure post on OF as somebody will be sure to help.
Not screw down - pull out crown. Screw-down crown is not required in space as there is not a lot of water or much risk of flooding... 馃檮

Interesting way to get to the correct answer...
NASA didn't design the Speedmaster, they just tested and approved it for use - not designed for space flight originally.
A screw down crown is not required in order for a watch to be water resistant.
And finally, although space is pretty dry, they called it "Splash down" for a reason...
Cheers, Al