You have to send us pictures of the rear end of the top of the rib and barrels on the vent rib gun. Also side views of the rib near the breech. Those pictures will tell us what the present pictures do not.

Thanks Bill, I was able to get some additional photos today that I hope will be adequate.

did the pictures above help with determining the barrels and the vent rib?

The barrels were replaced later on, it would have originally been Damascus. The vent rib is not factory. It would have been added after those barrels were put on the gun.

I'm sticking with Moneymaker for the vent rib. The matting of the rib is the same as on the Moneymaker Vent Rib on my 28-gauge Model 12.

Here is a Simmons vent rib on a late Remington Parker --

Attachment 134164

Thank you, everyone, for your replies and insight on these barrels. I have a lot to learn!! One question about the vent rib: is there a good Parker gunsmith who could remove that aftermarket rib and install an original rib? I’m thinking that would help to align it to the factory setup; just not sure if anyone is able to do so and if there are replacement ribs available. Thanks!

That would be a very expensive proposition. Likely as much as you spent on the gun. Mor more.

Don't remove the Moneymaker rib. It is a high quality item that does not detract from an average Parker. It will make a nice shooting gun. Removing the rib will make the gun worth less than it is worth now.

That is good to know. I assumed the exact opposite on it taking away from the value.

Bill is right, that Moneymaker is a quality installation. Much nicer than the Simmons I show that is just installed on top of the Parker rib.

The gun is already far from original with the Damascus barrels having been replaced with the Parker Steel barrels in the late 1920s or early 1930s. If that is the stock and frame of 80078 in the background in this picture --

Attachment 134276

that is not the wood it left Meriden with in 1894.

All of this is interesting history of the gun and in no way detracts from it being a great shooter.