Any help would be appreciated. It's a pretty dense piece of wood, and it looks quite a bit better in person than under my camera flash.

Looks like a Remington 1894 stock for a gun w/an auto safety.
C grade checkering pattern,,but the gun's grade looks to have been an F if I see the grade stamp by the ser# correctly,,,ser# would place it made about 1905
,,,,that's my guess anyway..

The level of knowledge on these boards constantly amazes me.

I agree, Frank!

2152hq, I believe you know your stuff! That is an "F" at the end of the serial number.

I input your info into Google and found this:
http://tangoyankee.com/sold/11..._02/11-10-13_02.html

Looks a lot like the stock I have on the outside, and I'd bet it does on the inside as well.

I very much appreciate your response.

The checkering pattern must be what was standard on the 'Trap' guns. It looks the same or pretty close to the 'C' grade checkering.

The small flat spring secured inside the stock was what jogged my memory. It puts downward pressure on a flat bar that is the link between the safety and the bolt. When the bolt is retracted (gun opened), the bar is pushed rearward and places the safety back into the 'safe' position.

Remington used a similar small flat spring screwed directly to the wood inside the forend of the 1900 Model SxS to hold the 'J' hook tension spring outward so you can easily reassemble & snap the forend into position.

1900 was the cheaper version of the 1894.

Nice stock..