Looks like a 'Victory' Model S&W Hand Ejector. Does the serial number start with the letter V? Bet it does.
Any other military markings or markings other than the typical S&W rollmarks?
So far, $150-$200. I remember buying them by the dozen for $75 each....
The autonomic nervous system provides for involuntary muscle function - the work of breathing, digestion, and so forth. On some folks, that's a pure waste of ingenuity.