Diplomatica

The Diplomatica is a limousine, based on a Cadillac DeVille.

It shows a lot of design-similarities with the Royale.
Only seven cars were produced, and it seems,
that only one model wasn't delivered to Saudi Arabia.

Going to:

Blackhawk
Bearcat
Duplex / IV-Porte / Victoria
Royale
Bear / Defender / Gazelle