Jeff is right, the quartz is right on top, sort of laying on it's side. The module is a weird one in many ways,,,,a short piece of flat, ribbon cable connects the display to the circuit board. You can actually swing the display completely to one side of the board and lay it flat.
Oh heck...I've reached into the trash bin and taken some shots.
Note how the holes for the hold-down posts come right up through a contact area. Two on one side are the battery, the other two are for the command/set contacts.
I don't think the modules are really that stuck, they just happen to flare out and jam in there since because the exterior circle isn't used structuarally like in many other modules....the four posts and the front plastic make up most of the support structure for the module.

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