Its as long a shot as one can take!
Does anyone have access to a Gremlins Miniature catalogue - released in the US sometime between 85 and 87?
http://www.miniatures-workshop.com/lostminiswiki/index.php?title=Gremlin_MiniaturesI know such a thing exists as I found a retailer who flogged one 10+ years ago! If anyone does have access - please shoot me a message, I'd love to update the lost miniatures wiki with pig-faced orcs, oink oink