This is 1 of possibly 12 built that was used for the Team and sponsors to use for inspection before the production models were made. Around 1500 where made for production this is one before that official run. Not sure what number or how far down the line this is cause when I got it the styrofoam box was missing that would have had any notes on it. The only stand out details is some sliver markings on the wheels and where the 50th anniversary logos are located on the car.