Any ideas on this?

[Shiloh]

 

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[Shiloh]

Found at 1850’s homestead

 

[creskol]

What does it say on the bottom?

 

[Shiloh]

Looks like BR

 

[creskol]

It looks like something threaded into the one side.. for some reason it reminds of a base for a receipt spike or something.

 

[Bramblefind]

My first thought was a Trade Weight. How much does it weigh?

Some examples here:

https://www.google.com/search?biw=1.......0...1c.1.64.img..0.1.131....0.9NIqjPLEtac

 

[Anduril]

Almost like a die to cut or form something; but what?
I've ruled out freeze plug.

 

[cudamark]

What's it made of? Looks like an old horn button.

 

[Shiloh]

It’s brass.

 

[firemanphob]

The ring around the facing edge in the first photo has been machined with what looks like a sealing surface. I think it could have been the flapper from an old check valve. the broken part in the back would be where it fastened to the swing linkage.

 

[CRUSADER]

Its a brass Pan Weight (sometimes referred to as a trade weight), the lead in fill on the base allowed it to be checked & changed to the official weight. As you can't see all of the verification marks, dating will be difficult, but I would say its 19th C.

 

[Shiloh]

Thank you.