King - on examination from your few pictures, this does appear to be an authentic 1896 rear carbine sight. These are often faked because they are worth north of $500. They are hard to find and very desirable because there are many 1896 carbines out there that do not have the authentic carbine rear sight. They often are found with a Krag 1896 rifle sight which is very similar but not marked with the "C"s for the carbine designation and they are only calibrated up to "18" for 1800 yards.

The "C"s on yours look correct but are a little hard to see. The fakes are usually pretty easy to spot for those of us familiar with the differences but can fool many unknowing early Krag collectors. That's why we're here to help!

The pictures below are close ups of one of my authentic 1896 Krag carbine rear sights on a carbine with the correct hand guard. Note how the front sight screw is proud of the base. It should be elevated above the base it screws into.

Yours would need to be examined a little closer just to make sure but it looks like a very good condition 1896 rear carbine Krag sight, appropriate for the 1896 carbine.

The 1898 Krag carbine could wear later carbine sights but usually not the 1896. It would fit on an 1898 Krag carbine, again with the correct hand guard and barrel band as in the pictures below.

Also notice how the "C" mark is hidden by the hand guard when the carbine sight is mounted. You only see the right side "C" when it is removed.

Thanks for sharing. Where did you get this sight?

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