✅ SOLVED Piece of lead something.

[mcogan / L.I. Mongo Mike]

Found on the shore of a pond that sits next to a farm field that dates back to the Colonial period.
Made of lead.
4 3/4 inches x 3 1/2 inches.
9.5 oz.

 

[vhs07]

Duck decoy weight

 

[mcogan / L.I. Mongo Mike]

That was quick.
Thanks, your reply led me to this pic.