I think it is either this one:
http://store.bethsoft.com/collectibl...ead-5inch.html
or this one:
http://store.bethsoft.com/collectibl...blehead-7.html
Or is the material different from those? Do you have one of the ones above to compare it to (I have no idea what those ones are made of as they do not say, people ehre have them though so they would know)? How tall in inches is it?