Those indents are cup holders in true German 1980s fashion of "what the heck are you drinking in a car for.. but since your american, here you go"
The Celebration was, to be honets, a marketing ploy. Sure its filled to a "high content".. those are the items that became options as the mark/dollar was in the crapper. It gave the buyer a feeling of getting something special.
I admit, the funky cloth interior is nice. Similar to the TurboS that came out in '88 as well. Must have gotten a great deal on the fabric back in the homeland
I came across a very nice example 2 years ago but went in another direction. I can see the appeal because of the interior differences, but I don't think its something to prop resale value up on these cars either.
Nice plaque though - I can't read it.. what does it say? is it in German or English?