thanks Zachary yes Iam very lucky to be the caretaker of such a lovely gun I will be interested to see if any other members respond, perhaps there are other Trap Grade guns out there with similar engraving but like you I think the gun is quite rare, I was a bit surprised that the research letter didn't make mention that the gun was a special order because obviously to have that style of engraving on a Trap Grade gun is not the norm, some body must have ordered it that way, perhaps we will never know!
cheers
Darryl