This particular one was done at a later date. The wear plate pictured is the 1910 version and the gun is much earlier than 1910.

The gun is a GH-Grade with an 0-frame. 102754, was from well before the replaceable bolt-plate of 1910 design. So, the fact that it has the new style bolt and bolt-plate is a big clue that it was returned to Meriden sometime after 1910. The fact that the barrel address is "Conn." rather than "CT, U.S.A." suggests before 1918.

Methinks it would be well worth your time and money to join the PGCA and order a research letter on the gun. A straight-grip hammerless 20-gauge Parker is a desirable gun, probably worth a quality restoration.

Researcher, thank you for your response. We decided the gun was in need of preservation to say the least. Rust was developing and the wood was horrible. My grandfather supplied lumber to the railroads and I think he may have applied railroad tie gunk to the wood. After three gallons of acetone this is where I ended up, were happy with the outcome. We wanted to keep the gun in as original state as possible, just wanted to preserve/protect the gun. Although the gun would have looked new had we sent it to NY, this was not our intention.
Link on my reassembly of the receiver and steps I took to preserve the steel and barrel.

https://www.youtube.com/watch?v=_HxJinAtZpE