I have a pair of O/U's from the 1960's bought in Taiwan, one is a Nikko and one is a Winchester, you can not tell the difference until you turn them over and read the name, everything is exactly the same. I haven't drug one out to compare to your picture but the trigger on your shotgun looks different than a 101.

Yours is a beautiful looking shotgun.

To get from getting Superposed eyes with an O/U you need to use a "Gangster Twist" while shooting them

Last edited by oskar; 02/14/18 12:17 PM.
After the first shot the rest are just noise.