Released as a single #5906 from 2007-2008. Models are black with brown under tones, and have eye whites.
Released as a single #5712 and in the Stablemate Assortment #5907 from 2009-2011. Each model came with a breed information trading card. On the 2011 Retired List.
Also released in 2010 in a Horse A Day Calendar set. These could have been leftover models.