Joe,
Thank you for your response and for the information. Yes, I should have been more clear. My English pistol is silver mounted. The top of the barrel is marked "London", and the lock is a handsome "Ketland & Co." lock with a sliding safety.
There are silver hallmarks on the guard and on the buttcap, which, from my research 15 years ago, are the hallmarks for Birmingham silversmith Charles Freeth, and have an "S" date, which I understand to be 1790. Several years ago, when I
wrote an article for The Gun Report on the Jos. Bogle rifle, I used that pistol to assure me that my dating of the Bogle rifle was correct since it has a similar "Ketland & Co." lock (without the safety, of course). Some had assumed that Bogle made
that rifle when he was still in Virginia, but since records show he was in Tennessee by at least 1782, I concluded that the markings on the lock gave evidence that it was made in the decade following Bogle's removal to Tennessee sometime in
the 1780s.
Somehow I am under the impression that Ketland locks have been marked "Ketland", "Ketland & Co.", "T. Ketland", and perhaps another, and I was hoping that someone would have evidence that each of these markings represent a different time
period in the firm's history which could help date a particular lock and, hence, give some evidence to support the earliest date of the gun on which it was originally installed.
Wayne