Patrick,

If you look at the fifth photo from the top on the left side you can see what I'm describing as a circle with wings. Sideways teardrops might be a better description. You can see the circle and the right "wing" pretty clearly. The left is fainter with both the crud and the cleaned version.

I do not think the Enfield stamp is completely gone. If you look close, you can see the outline of two circles, especially on the left side. The bottom of the stamp can't really be read because I think the Enfield is still there along with the newer stamp on top that just mixes everything up. There was a nice larger crown and I think a 2 stamped on the butt itself under the butt plate. I didn't take a photo of it.

There is also an interesting thin brass plate between the wood and the steel plate. Would this be original or was it something added in the field. In any case, it appears to be there to keep the wood from touching the steel and causing either rot or rust and it appears to have worked as the interior of the buttplate is nicer than most I've taken off. It's very thin and has the bend at the top included.