Here are some photos of the long wheelbase Phaeton with black paint (code A1) with the 'Piano Lacquer' (Klavierlack) clearcoat option applied overtop of the black paint. This is the same paint and clearcoat option that I have on my own car.
The 'Piano Lacquer' clearcoat covering is available as an option on top of the following paint colours: Solid Paint: Black (A1) Metallic Paint: Mignon Green (A3), Coucou Grey (A4), Turca Anthracite (J3), Mazeppa Grey (N8) Pearl Effect Paint: Tarantella Black (B2), Nocturne Aubergine (L6), Luna Blue (S5). Note that the paint code will change if the Klavierlack finish is ordered - see Derek's post of February 6, 2005, further down in this thread for additional details.
Black Piano Lacquer paint