Bought from an 90+ yr old lady in Arizona in 2021. She had them kept away for decades and had long forgotten exact details. These are made of real Arizona red rock, there is no signature only a couple knife markings type on the back In some Roman numeral. It’s a 3 sided piece weighing approximately 40 pounds. It is 14 inches height and 9 inches width. Please message me with any questions regarding this beautiful and potentially historical piece. If you know more details about this item and its specific origin please reach out, thank you.