Door plate?

[allison86]

Dug this up the other day I am guessing that is a skeleton key hole

 

[Calabash Digger]

I dug one similar to it one time.

 

[Carolina Tom]

The key holes that I usually see are brass.

That hole looks like a notch that would be used to hang or attach something.

 

[Bruce R]

Certainly looks like an escutcheon, but I think it's off a steamer trunk or something like that.

 

[Tommy G]

My first impression is that the hole appears to be a little too large for a skeleton key hole. Of course, it could have just been a huge lock!

 

[allison86]

 

[Loco-Digger]

My guess would be that it is part of a removable shelf from an old cast iron stove.