Welcome to the forum.
Yes, you have a rare car, even if many people will not really notice because it's a sedan. Here are some links that may be of interest. Good luck with the car!
http://www.panteraclub.com/deauvill.htm
http://storm.tocmp.com/detomasodeauville.htm
http://www.detomaso.it/gb/vetture/ieri/deauville.html
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