Marbles sight for Win 02/04 67/68

Marbles tang sight for the Winchester 1902 and 1904 boys single shot rifles. Also for the 67/68.
Good work condition lock clasp works fine, elevation and aperture are moveable and not sloppy. No bluing and pivot screw slot shows marring as shown but its a functional and not often seen little sight. Fastens to the stock. 
1.125” c to c mount holes
1.550” approximately bottom of base to center of aperture at lowest position.