Not sure how this one comes off and I don't want to experiment and really screw the back up. Now I am not talking about the battery compartment, I got that, all be it a real bugger. I want to get the movement out so that I can clean the case. If you look at the upper left corner of the case, a red circle marks a pin hole of sorts, not sure what that is for.
Anyway, does anybody know how this comes apart? Is this a snap back? A screw down back? I do not see the typical small slot for prying off a snap back case so I am just not sure. Perhaps @andyboy or @Foxindebox I know you guys do a lot of Seiko work. Any help is appreciated.