Copper Abstract Artisan Turquoise Necklace Signed

This listing is for a artisan necklace purchased at an estate sale in Nevada. It is signed on the back, but I cannot read it. If you know, leave a comment please. It appears to be brass and copper with tumbled, turquoise stones. The pendant measures just over 3 1/2" long, including the bale. The chain is just over 18" long. The signature may be Robert? There are a couple of dots on the front copper, see photos. Buy with confidence, careful packaging promised. I love to bundle. JBag 1