Dogs Head Butt Plate on Trojan

[B. Dudley]

That plate would not be correct on your gun. It should have the standard serrated plate that was used on the Trojan gun.

And... any gun from that era (1926) would have the name "Parker Bros" or "Parker Brothers" on it. You are correct in assuming that the plate on your gun is from the Remington Era.

Now... since all we can see is the butt end of it, not much can be assumed based on the condition of the rest of the gun.
It is not out of the realm of possibility that the gun was worked on by Remington later on and that plate was put on by them. Are there any Rem repair codes on your barrels?