These six pictures are from an English TV show and feature a 2.5 inch Blakely gun on a truck carriage, probably intended for a yacht. The barrel in 33 inches long, rifled with 6 grooves and clearly marked Fawcett, Preston & Company, Liverpool, 1865.
It may be one numbered 260 or 261. It is certainly one of the last Blakely guns made by Fawcetts, and the only one with such a long breech hoop and such a fancy carriage.
Hope you all like it.
Starr