Interesting brass piece-handle?

[DownNDirty]

I found this yesterday at a site where I have found relics from the 1700s and early 1800s (plenty of square nails and ceramic shards); almost no modern trash. It is made of thick brass. Not a utensil handle-too thick and heavy. The rounded end has a notch in it, which is kind of puzzling-any ideas? Thanks

 

[Subterranean]

Part of a tankard handle? Interesting! Sub

 

[DownNDirty]

Could this possibly be part of a door knocker, or drawer handle? The back side is pretty scratched up (with patina over the scratch marks), like it repeatedly came into contact with another metal object.

 

[DownNDirty]

Any other ideas?

 

[nsdq]

PartPart of a trigger guard from a Flintlock