Musket lock plate?

[arrowhead82]

Hi guys, I haven't posted in a while now, I've been VERY busy lately. About a week ago, I got the chance to hunt an old barn site. Lots and lots of iron. I pulled this out of the ground, and recognized it immediately. Musket lock plate? Now I just need to know what era or gun this might be from. THANK YOU!

 

[BosnMate]

If you can carefully clean off the rust, perhaps there is writing on it that will help with an ID. It's a lock plate for a percussion cap gun, but there isn't enough info to know it it's for a rifle, pistol, shotgun or musket.

 

[NVNutcase]

Not trying to Hi-Jack the thread with my picture, but here is one I found last week, for comparison. This one is from a U S Springfield 186??