Found those pics at the x-entertainment home page, but no mention about what they are, name of the band and other stuff.
Goodness, I thought I was the only one who goes to that site.
As for the pics, just where did you find them on the site?
Okay, found them here. Looks like an outtake of a Star Wars television special??
The guy who wrote the piece said that those pics have been posted in the X-E forum some time ago. Besides, those Don Post masks weren’t available in the market at the time of Return of the Jedi’s original release.