The Californian mirror from Vitaloni has been widely used on formula cars and sports racers. They have also been used on many street cars.
These high-quality mirrors feature a flat lens that is easily adjustable inside the housing. The housing also pivots up and down at the mounting flange (the stem and housing are one piece). The black matte finish can be painted if desired. The oval lens measures 3" high x 5" wide. Sold individually.
The Right Side Vitaloni Californian Mirror is sold separately and can be found here.
Look for the Californian mirrors on Nikki Lauda's Ferrari 312T/2 in the movie Rush!