Um, interesting piece of info that there are 2(two) >>407<< on the tubeset & that goes a long way in defining the one near the forend lung/hanger being a Zella - Mehlis datecode of >>4.07<<. So yes, a repair in April of 1907 but the smokepole dates to an earlier period with the Jones Underlever lockup & long metal forend contrivance. But the pattern of the tube is just stellar.

Serbus,

Raimey
rse