This custom turbo gauge was on a 1987 GN which I purchased in 2012. It was in working condition when I removed it in April 2013. The prior owner of the car, who was an Air Force mechanic, had a friend in West Germany custom build a cherry wood enclosure for him. The inscription on the dail face reads "NOSHOK" which I assume is the manufacturer and the words "Made in W. Germany" . It fits very nicely and tightly in the center console. See pictures attached. This probably is a one of kind. If you like the look, the asking price is $100 OBO plus shipping. I will take PayPal however you will need to add 3%.