Given you've seen '45 and '46 but no '47 Liege guns, would it not be fair to deduce that in '45 and '46 the manufacturers were working off stockpiled barrels produced some time earlier and only put together and submitted for proof in those later years, and that by '47 those stockpiled barrels had been used up? And, along those lines, would it not also be fair to similarly deduce that this particular Italian gun was similar, in that the barrels were made earlier and only finished up and submitted for proof in '44?

fiery, dependable, occasionally transcendent