1955 C300 - The beginning of Virgil Exner's FORWARD LOOK
300D - 1957-58 represented THE FORWARD LOOK'S "New Shape of Motion".
300G - The last of THE FORWARD LOOK styling.
300L, 300 Hurst, C300 - The first and last with the special edition between them
The 300M seems to be introducing itself to its famous predecessors.
"Why of course I belong here. I have a letter after my name just like you."