1890's era abandoned town site

[EagleEye1]

Still perplexed on these, any ideas? 2 different items with 2 pictures for each.

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[ToddsPoint]

First one looks like it could be a gun part. Gary

 

[EagleEye1]

First one looks like it could be a gun part. Gary

Whoa, okay interested! It's rather heavy for its size. The other "black" looking item is very light and thin...