Knucklebonz Rock Iconz 2018 ZZ Top Billy Gibbons Inspected and Photographed certificate #194/1969. Only 1969 pieces created and sold worldwide and SOLD OUT.. All Rock Iconz statues are officially licensed, limited edition collectibles. Each piece is hand-crafted. This is a fine-arts process where each statue is hand-cast, painted and numbered. These statues are created in 1/9 scale, making the average height of each approximately 8.5” tall and each statue comes with a certificate of authenticity on the base of the statue.