I knew that mark looked familiar,just couldn't remember where I saw it, (Old age setting in I guess).
Just happened to be oiling the barrels to my 1891 EH that I just finished rust blueing and there it was! Appears there was a damaged #4 stamping die floating around the Parker shop. Wonder how many more we could find like this and on what year guns?
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"Double guns are a sport and a pastime built into a beautiful package to which I attach myself when entering the great theater of autumn, those days now grow more precious because we are given so few".. Robin Lacy