Dueling pistols

When I acquired the Sterling silver pistol on the left in 2018, it made my Best Six for the year and I didn't think that I would ever part ways with it. But since I acquired the virtually identical one on the right, the one from 2018 will be going up for sale. Both pistols are in immaculate condition and were made by the same maker, but there are some slight variations; The scrollwork on the silver scales is slightly different and one has a round barrel while the other has an octagonal barrel.