Another question I would have is that if this is a faked 1896 rear sight, did the seller know this and did you pay extra for the rear sight as an original?

If it is not authentic, you can ask for a refund and the seller should honor it. It's up to you depending on how you purchased it and the honesty of all involved.

If you were told or suspected it wasn't real, that's a different story.

I have a couple 1896 carbine sights that are in good condition but authentic. Condition isn't the key issue- it's the details that count. Post more pictures of it so we can see better.

Also, your front sight cover looks interesting. It may be a carbine front sight cover that should be marked with a "c" on one side. They are worth $150 or more (if not faked also!)

I learn something new all the time here!