Thank you for your new input, Simon
It is visible that you know a lot more about these weapons than i do, who only once had a rather fine Queen Anne
type specimen, eventualy witrh a side feather spring lock.
My only book about these pistols is John W.Burgoyne's work, from which i took my previous posted observation. However it is this same author who says that
box lock examples showed a a continuation of the very high standard of craftmanship and decoration observed with conventional Queen Anne style pistols. Many examples continued to have silver munted buttcaps and estucheons and the use of silver wire was common ...
You will now understand that i was influenced to have a distinct perspective of the box lock version in these pistols.