Looks like the pole of a 13/18 pdr also,these guys will be busy in 2014 !
If you Google 18 pdr limber there is a facebook link to a guy restoring one for the 2014 aniversary over in OZ,does any one know anything about it ?
http://www.facebook.com/pages/Restor...ref=ts&sk=wall
Rob..................rnixartillery