Any guess on these fragments?

[Scottdavid]

Found along the riverbank of a 1700s fort but may not be that old . . . Thoughts?

This first one interests me the most. A square hand-forged pin of some sort driven through a thin piece of copper.



Then there’s this:



And this:

 

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[old digger]

Your item in the 4-6 photo's is the hinge that pivots on a toilet seat.

 

[bradyboy]

1st item looks like a strap with nail
pipe hanger, gutter strap
imo
brady

 

[dts52]

Scott David - Copper strip could be a grounding wire for lightning rods? Too thin? Clearly a TOP (thing of purpose).
dts

 

[Scottdavid]

Thanks for the thoughts guys - an end to the fort riverbank hunts. Police informed me that it’s off limits now