One of the most underrated and unappreciated utilities in Erdnase's Book. The utility has alot of usage in terms of Magic and Gambling. One of the most notable persons that made good use of the Mexican turnover is Bebel. The move can be seen being used in Grace and his Three Card Monte.
Using a modification of Erdnase's method by pinching the corner with the thumb and the index. Scooping from the lower right hand corner of the card on the mat, pushing the pinched card forward and transferring the thumb and middle finger on the card on the mat. Secret is within the index finger by using it to flip the pinched card.