Good day Graham my name is ***** ***** is my pleasure to assisy you on your question.
Your artist is Richard Stone Reeves was an American equine painter whom Blood-Horse magazine described as perhaps the greatest modern-day horse painter. Born in New York City, Reeves grew up in Garden City on Long Island. Wikipedia
born: November 6, 1919, Manhattan, New York City, NY
died: October 7, 2005, Greenport, NY
Education: Syracuse University.
Your limited edition prints have sold at auction for: £82 to £116 each.