British New Land Pattern Cavalry Pistol

[rrogers]

I have just aquired a British New Land Pattern flint lock pistol. For it's age a very nice looking peice. Looks to be all origanal. One screw is missing due to having been broken off. (I've already removed the broken peice) There is a lot of info dealing with the history on line but Very few pictures and no stated values. So my questions are, Should I make a screw? Should I shoot it? And can anyone help with a possible value range?
I have more Pictures if needed

 

[Robolb]

I have a similar pistol I recently bought in Melbourne. Better condition though I think. That one cost me $1,800.