The Signature Series was a program where an artist would design a model, and then the Stone Co employees painted them. Each model had a stylized sticker of the artists' signature, and in 2006 they came with the signed and numbered Signature Series Collector Card, instead of the Certificate of Ownership.
Yes I Can is a dapple grey Thoroughbred. Designed by Elena Christopher (aka Elaine Stone). Available in matte and glossy finish.