So..
First card appearance: Kenner 77back
That means you can get a 77a (offerless) 77b (Anakin offer) and then the same for the 79 back- 79a (offerless) and 79b (Anakin offer)
You can also get a coin offer variation, so effectively you could find a coin offer on all of the above, resulting in:
77a + coin offer
77b + coin offer
79a + coin offer
79b + coin offer
POTF has only one card type but perhaps if you got lucky you could find a coin offer on the POTF card- be a nice variation if so.
Trilogo wise:
Palitoy
Clipper
Meccano (super rare)
PBP Hybrid - http://theswca.com/index.php?action=disp_item&item_id=53146 (my fav variant)
That takes you to a possible 14 carded variations if you went nuts on it, if you don't want to take it that far I would suggest just a nice offerless version of each - Kenner ROTJ, Kenner POTF and Trilogo.