Hi Mika,
The maker is probably Robert Jones and his son Edward of Liverpool, England. Robert Jones is listed as working between 1827 and 1869, the very end of the flint era and well into percussion and breech loading guns. The finial on the trigger guard I of which I was asking is the decorative front end of the guard, not the bow. I can see from one of your photos that it is a pineapple as I suspected and also the rear sight has a wide "U" notch as I guessed. Definitely set up for dueling. Interestingly, the styling is a throw back to the 1780s and 1790s. The quality is not comparable with the 1st class London and Birmingham makers. Regardless, they are very nice pistols and thanks for sharing them.
dave