But is it PARKER BROS. or PARKER GUN WORKS (the Remington era stamp) between the OVERLOAD and the PROVED?

The earliest gun I've recoded that has the PARKER BROS. OVERLOAD PROVED stamp is in the 1983xx range.

We do find guns with even lower serial numbers that have either of the OVERLOAD PROVED stamps, but that would tend to indicate the gun was rebarreled.

Hi there,
It is not Remington and was not rebarreled -here's a pic attached....

Sir,
I have DHE 20 ga ser no 233627 with the over load stamps also.

kurt varga

Yes. PARKER BROS. is what would be expected in the OVERLOAD PROVED stamp in that serial number range.

Gary, I’m pretty sure they are worth more!

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.