This Lagonda LG6 Rapide is a teal treat that charmed the world’s elite...With only a day to peruse the soon-to-be-auctioned, 48-car Frederiksen collection, we must admit to browsing rather more hurriedly than we’d have liked. But one car we just couldn’t pass by without further attention was the stunning, one-of-six Lagonda LG6 Rapide Drophead of 1939…