Definition of pale face variant

[mumbo]

or perhaps the I've just seen a ghost face variant.......

http://www.ebay.co.uk/itm/VINTAGE-STARWARS-LUKE-SKYWALKER-DT-FIGURE-PALE-FACE-/401067289414?hash=item5d61792b46:g:Y60AAOSwGotWtg27

Looks a good price too?????? but I'm no expert on DT's