I picked up a cast buckle up today, often called an "1890" Buckle.

These are associated with State (National Guard) Troops, who were 'sworn-in' for foreign service, during the SAW.

These were used with Mills Belts and a pair of brass "C" wire closures, by many Troops armed with the .45-70 Trapdoor Rifle.

I didn't pay very much for it and always assume most buckles to be reproductions.

The Seller, who I respect a lot, thought it might be an original. I remain skeptical and think it is a reproduction.

Any one have insights on how to tell the difference?

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