I’m always on the lookout for golden era Mercedes in rare colors to add to my small collection (more on that soon!). We’ve reached the point where despite millions of these cars being built and nearly all standing the test of time well, any nice one is starting to creep up in value — even more so if it’s in a color that isn’t earth tone. Today’s car that is up for sale in New York is the ultra-rare Inca Red paint that I’ve only seen on a handful of Mercedes over the years – let alone a W123 coupe.