Any info on this cuff

Any info on the markings or if it is even real? Really dirty don’t know what to think.

Anything input appreciated.

This looks like a Fred Harvey type item. Very collectible but not Native made. The other two look to be Native American from what I see.

Fred Harvey for sure, but that doesn’t mean it wasn’t Native made. Many of the companies that made Harvey-era jewelry employed Native Americans in their factories.