OYY Classy Castilla - medium sport pony born fall 2015 This lovely filly belongs to a family of superb ponies - ride and drive ... some of those relatives are pictured below in Castilla's gallery. She will likely mature around 13.2 hh -- she is currently ground driving and loves her work. Castilla has a willing disposition and work ethic -- learns quickly and is a delight to school. $5500 - price to increase with training Castilla is currently hitched and driving .. I am sure she will progress under saddle quickly as well - once she is old enough.