someone from the sight explained how I could be mistaken in the grade given a lot of 0 grade guns had engraving like I described. His assessment was it being an early 0 and I'm sure he's right.
Its still cool to think it might be one of the first from Fulton.
the shop drawing on the sight were interesting as well the balls on the one I have are 5/8" and has a rounded head head on the bottom trap door which is carried on throughout production.
The Syracuse gun is shown with a 3/4 ball and a square bottom trap door.
The final design shows 1/2 balls and round head bottom trap door.
Did I read it right??
IDK but I think it might show how they were starting to tweak things on the line .