The 1931 CG Imperial was a bellwether for where Chrysler’s top-of-the-line prestige models were heading as automakers entered the Classic Era at full steam.

A challenge to the likes of the V-16 Cadillac and Senior Packards, it was based upon a grand, 145-inch-wheelbase chassis.

Styling by Alan Leamy incorporated a bold, subtly raked radiator shell; a long hoodline and fenders behind Duesenberg-like bumpers; and sleek bowl headlights.

Power came from a 384.8-cubic-inch nine-main-bearing straight-eight engine, producing 125 horsepower with peerless smoothness.

Most significantly, reflecting Chrysler’s engineering prowess, the CG Imperial was a wonderful package—beautifully balanced and, for its era, exceptional to drive in all regards.

Among the most striking bodies on this chassis was LeBaron’s roadster, a jaunty ragtop whose rakish lines were distinguished by an interior that wrapped over the edges of the doors, as on a vintage biplane.

It was dramatic, exciting, and scarce even ...