In 1987 Buick introduced limited production GNX for"Grand National Experimental" at $29,900.00. Buick only produced 547 of these monsters. This car was created to be "Grand National to end all Grand Nationals". By far the greatest car produced in the 80's. These are 3mm thick,painted metal and single sided keychains.  I've included a few pictures of some of my other muscle car keychains I have listed here . Thanks Bob