I have recently added a set of 32 inch damascuss barrels with forarm to this gun. The barrels are shown in the thread The Beauty of Damascuss.
Interestingly enough the serial number of the 32 inch bbls are in the records as leaving Parker fitted to a GH 0 frame 16 with two sets of barrels, one 28 the other 32. So now I have a backwards GH 16 with two sets of barrels

This gun has now sucked up it's last dollar from me.