The institute did not have anything on the Rodda gun, however, we went to Search and found the following:
R.B. Rodda & Co. Gun makers to H.T. the viceroy & H.R.H. the duke of Edenburgh. London & Calcutta double rifle 27" barrels. Under barrels marked Henry's rifling. A&T large bore unknown BP marks
This was liested as under aution in Sep 2003.
JM