The CLK63 was built only for 2007-2008 and sold in the US only as a cabriolet, with commonly cited figures of roughly 143 for 2007 and 100 for 2008 (about 243 US cars), and just under 1,200 worldwide. Sellers lean on these numbers to argue future appreciation as hand-built naturally aspirated AMGs disappear, though exact counts vary between commenters.
CLK63 production rarity and collectibility
Mercedes-Benz CLK55/CLK63 AMG (C209) · history