Take it from a true New Yorker: this pizza is legit. I've struggled to find places worthy of the NY label in the Valley, but Casanova Bros. scores high for its authenticity.
The owner, Tony, is as affable as they come; he's as authentically as NY as the pizza (if not more). Since it was our first visit, Tony provided free garlic knots for the table. He was overly generous as well when he provided free desserts.
The one knock on the place is price. Two slices and a fountain drink check in at around 7$. Not eye gouging, but certainly no bargain.
Regardless, if you have guests from NY or you want to sample some true pizza from the best state on the East Coast, make Casanova Bros. your next lunch visit.