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Looks to me to be in really nice condition for a vintage diver. Bezel looks nice. Prices vary greatly depending on size plus bracelet length. Any that I have looked at that are coming from Japan have very small bracelets and parts for these bracelets are getting hard to find plus expensive. Good luck.
I am sure its a quartz but I think they come in 2 sizes. Well worth asking as the larger size seems to be much harder to find.
That's a small size as there is no space between the date window and the minute marks.
It looks ok although a picture of the movement would be a plus and generally the versions with the concave back had "Mercedes Hands" not "Sword Hands" but it's a known variation.
That's incorrect, like I wrote the large(st) size quartz (40mm) does have a gap between the date window and the minute marks, the small(er) size (38mm), like the OPs and your first picture doesn't...now the second one you show is the small(est) but it's the lady's version and it's tiny at 27mm.
Here's a 40mm version like mine (I don't have the two-tone bracelet)
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