NASA - Odetics Prop 003 - Four Channel Pre Amplifier - DC Milliamperes meter

Description

From Engineers estate ... not sure what to think of this....  marked Nasa Prop 003.
I have no clue if this is a unit or an actual prop. ??  I took back off to show insides.   the ac cord is cut.  use zoom.  does have Odetics label.
measures 17 x 10 x 4.    Does have electronics inside , so maybe it was a pre amplifier ...   is marked Nasa Prop 003.  unless means property ?
you know as much if not more than me, see all pictures, use zoom, being sold as-is, as found, untested , for repair, parts or just display.    final sale.
thank you
bst