Push Button Valve by The Chicago Faucet Company.  Chrome plated , interior of valve is also silver colored.  Push button springs back as intended.  Attaches to a 1/2 inch threaded male end water pipe (outlet is same size).  End to end measures 3 inches (in line with pipe).  Measures 4 inches from bottom to top of button.  Would work great if attached to a bubbler or other short timed fixture.

New open box.