Citadel C21 Cavalry "Wraith Rider", from the 1st Compendium, March 86 Flyer.  This figure was also released as part of the Fiend Factory series (FF86), where it was called, "Wraith Collecting Souls". Very Rare OOP unpainted metal.  

Note: If you're looking for a particular C21 horse and/or rider (even ones from the 1st compendium), there's a good chance I have it, so feel free to contact me with your request.

Item might include small pieces or metal, making it an unsuitable toy for children.