Help ID these items.

[DigginDownUnder]

All these items were dug at a mid 1800's site.
First is a circular lead item.




Second is another circular lead object.




Third is a thin brass thing with an ornate pattern on one side.



Another ornate thingy



And any idea what this metal could be?


It's heavy and non-magnetic, it tarnishes when polished and shines.



Thanks for looking and for any help.

 

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[bootybandit]

Nice digs! That's a Bic lighter (20th century) LOL

 

[DigginDownUnder]

It's certainly the most useful