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 came with a Certificate of Ownership.
Holly Jolly is a bay paint on the weanling. Designed by Chris Jolly. This is the non-custom version. 250 were produced to include both the custom and non-custom versions. Unknown how many of each version was made.