Is Pantera 7X more suitable?
Yes, that will do.
It seems to have originally been called the Pantera II before becoming the Pantera 7X then morphing into the Monttella 5.7 (puzzled here before).
Tom Tjaarda was (rightly) very proud of this car and I believe it was part of his own collection for some years. I don't know how he parted with it..
Interestingly it is seen here registered in the UK.
Below are more pictures, showing the 'Pantera' name on the car. A beautiful car in a stunningly beautiful setting, which looks like the Italian lakes to me so might be at a recent concours. Perhaps the car has been returned to being the Pantera II again, as these don't look like period photos?