Forgotten prototype- 3500 gt

I´m interested in forgotten as well as remembered Maserati one-offs and prototypes from the 1960s. This one I have come across in a book and on the internet. No one seems to have a clue what it could be. It´s definitely based on a 3500 GT I presume. But is it a work of Carrozzeria Touring...? I´d be more inclined toward Vignale because of the squared of grill and the airy cabin. Nice stance. Any clues anyone? Kind regards,
Jan
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Carrozzeria Touring for sure. This car is a design study post "3500 GT Touring". I'm sure that this car is still with us today. I spotted it in the Candini workshop with an updated front and rear.
http://www.ferrarichat.com/forum/maserati/189144-classic-maseratis-movies-2.html

 

It sure looks like Carrozzeria Touring but what catches my eye is the grille. Isn't that rather unusual without the "V" shape over the trident ?

 

This Touring prototype was at the Turin Motorshow in 1962. [MAB29] AUTO CLUB SUPP. ALBI DELL'INTREPIDO N. 882 MASERATI 3500 - B. PETRONE | eBay

I'm pretty sure that this car still exist. This is probably the car located in Spain with the new front treatment by Pedro Serra. Tipo AM104 ???