This is a saleman's sample of the Accutron Astronaut Mk IV, its crowns long since been scavenged for repair on another watch. It probably was complete at the time with band.
The pics show light scuffing from being in a drawer for many years, but these would easily buff out. The crystal is mineral glass.
I'm wondering if the serial number- which begins with an 'I', not a '1', is unique to samples.
Just a bit of history.