It's in the article,lol
AMX/3 #4: Painted teal-blue, this car was finished to show quality by Diomante and Bizzarrini for the Turn auto salon in the fall of 1970. Considered the production prototype, it was the first to have a revised body including four inch longer rear quarter panels, bigger fender flares, full side glass, semi-concealed windshield wipers with a raised cowl, and different hood vents for the radiator. It also lost the active, pop-up rear spoiler, a novel feature that wouldn’t show up on production cars for decades. Number 4 and number six had the smaller 360ci V-8 installed, possibly for budget reasons or because by then the 390 had ceased production but the 401 wasn’t yet available. Purchased for $9,000 by Jerry Werden and Bill Demichielli in 1971, according to
one source it remained in Werden’s possession until his death in 2018 and was sold to an anonymous collector who bought it from the Werden trust in 2020.
Hemmings, though, has Demichielli selling #4 in 1976, with it later passing into the possession of Walter Kirtland of Baton Rouge, Louisiana, in 1989, who subsequently sold it to a German collector in 2014.