Acid stained, then coated with a polyurethane product. If I had to do it again I would go with a more matte finish over the acid stain, this was supposed to be satin but turned out gloss.
2005 ///M3 Estoril Blue/Gray SMG
2012 740i Black Sapphire/Black Dakota M-Sport
2010 328i Titanium Silver/Black Dakota Sport
(+1999 911 Carrera Cab, 1967 Morgan +4 SS, 2008 Nissan Armada)