I am certainly not trying to force this fowler into a pre-1713 straightjacket and I think it unfair to suggest otherwise. I am trying to understand WHY it falls within whatever timeframe is appropriate, as well as why it would not fall into an earlier timeframe. Quite frankly, comments such as "your date is about a half-century too early for this gun", "Sorry, but the person who died in 1713 did not make this gun. Not debatable in any fashion", "Looks like a 1760-1770 gun" and "Looks like the mainspring and tumbler work together using a stirrup" without any explanation why, or what that means, do nothing to help myself, or anyone else with a similar level of knowledge, better understand those little nuances that make all the difference.
I have the greatest respect for the members of this board, their level of expertise and their willingness to help. However, one all too often sees pronouncements with no accompanying explanation or documentary reference that leave the less informed reader with those big unanswered questions - WHY, WHAT DOES THAT MEAN and HOW DO WE KNOW THAT. Dave's, and Seth's recent posts are, in my mind, good examples of posts that help the reader to better understand the subject or track down the information. I would have included Mike's recent comment, had he mentioned if the barrel was signed.
And, yes, I am guilty of looking at the 18th century through a 20th century (because I am an old @*rt) lens. End of rant. I sincerely hope it is taken in the spirit it was given. Not to criticize, but to help folks understand that, sometimes, a little more information can make all the difference.