This 1999 Mercedes-Benz SL 73 AMG Is Three Times Rarer Than a Pagani Zonda

This is no ordinary Mercedes-Benz SL-Class. Although it may look like your typical R129-gen car from the late 1990s, it’s actually rarer than a Pagani Zonda supercar. That’s because this specific SL on sale courtesy of RM Sotheby’s is one of only 85 AMG-modified SL 73s in existence—basically a top-specification