FYI: I own a Parker PH #84503 built in 1896 with 28" twist barrels according to Chuck Bishop's research letter. At some point after 1910, the gun was returned to the factory
for fitting with a new set of 26" Parker Steel barrels. As indicated by Chuck, as you know, "complete factory and return records "do not exist". However, both the 28" Twist and the 26" Parker steel barrels have separate forends stamped #1 and #2 and the barrel forend lugs are stamped #1 and #2. And, both barrels were retrofitted at the factory with James P. Hayes's patented improvement to the bolting system. Further, relative to this discussion, 26" Parker steel barrel flats are marked with the Overload Stamp both above and below the barrel lugs.
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