since i'm the OP, here's my collection.
1997 OG G-shock (found this last week in one of my drawers, just bought a new nylon band which is being shipped to my house):
casio film watch (daily beater):
invicta skeleton mechanical 9838 (can see through to the back, as well as view the in-house mechanical movement):
the display back (no one really knows what kind of movement it is, but it's decent enough for a manual wind watch):
and my prized hamilton khaki field automatic chronograph:
display back (showing the automatic winder, and valjoux7750 movement, the thing's a workhorse, i lose probably 1 second/day ):