ID help...horse tack?

[jcooking]

Found this yesterday and can't figure out what it is. Maybe a big buckle, carriage hardware, horse tack, I just don't know. It seems to pivot at a hinge possible. Any help IDing this would be very appreciated.
Happy 4 of July and HH!

 

[Jeff H]

Looks like a link to an old gear chain ??

 

[aka da Prof]

right, like from a manure spreader.

 

[creskol]

right, like from a manure spreader.

A 3 1/2 inch link? .. never seen a drag link that big?

 

[jcooking]

Yes it does look like these would link together, thanks!!

 

[creskol]

I think you are right with your initial assessment .. horse tack .. I think it may very well be a type of hame hook as shown in my reconstruction photo below. Your relic was added to the hames on the right.