Strange cast metal whatsit. 313 marking.

[toughturtle]

I found this about 8 inches deep in the woods. Seems to be cast metal. looks like it may be a hinge or locking mechanism? Has a raised 313 marking on the front.

Any ideas?

 

Amazon Forum Fav 👍

Agony and Death on a Gold Rush Steamer: The Disastrous Sinking of the Side-Wheeler Yankee Blade - Grab it through Amazon!

[yaxthri]

Tough one...