"Sail Barge" Coin and "Sail Skiff" Variations: The "Sail Barge" coin shown at the left of the above image is one of the rarest and most sought-after of all Power of the Force coin variations. The title was eventually changed to "Sail Skiff" because, of course, the coin depicts the smaller skiff vehicle and not the large "Barge" on which Jabba rode during the early scenes of Return of the Jedi. Although Kenner did patent a design for a Sail Barge vehicle, the toy appears to have never been prototyped.

One wouldn't be too offbase calling the "Sail Barge" coin a prototype; to my knowledge, all known examples have either originated with former Kenner employees or turned up inside the very few framed coin sets that were issued to Kenner executives.

The other two images show two versions of the "Sail Skiff" coin. One, quite oddly, lacks the text reading "Star Wars," which appears prominently on the other two versions.

Here you see the backs of the three coins.