This is a Monk C, at 8ft long the smallest of the three lengths of this pattern of gun. It was only produced in 32pdr calibre in lengths of 9ft,8ft 6inches and 8ft.
It is mounted on an original mid -19th Century naval carriage but not one intended for this gun.
The Trunnions are fitted with, what seems to be 20th Century, aluminum bushes to allow them to fit the carriage.
The gun formed part of the Rotunda collection until 2009 when it was loaned to Fort Amherst.
The carriage is one that is currently being appraised to see how much restoration work needs doing to the carriage. Although the wheels look to be metal they are in fact made of wood and are laminated but these are suffering the ravages of time along with there being a number of repairs carried out in the past.
Note also that the side cheeks do not have the arch cut out at the bottom but do also have the brass ropeway installed in the side cheeks which this feature is not that often seen.