🔎 UNIDENTIFIED Found 2 of these so far and I'm stumped

[bellis73]

I found 1 in my backyard with my detector and I found another one in a really old tackle box. Any help would be appreciated. Thanks

 

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[ticndig]

what's it made of brass? lead ?

 

[bellis73]

what's it made of brass? lead ?

It is magnetic so it isn't brass or lead

 

[dingode]

It looks like a sliding lid to a small container of some sort to me.

 

[crashbandicoot]

Perhaps a lid to a small box of hooks or sinkers.