Bravo, my dear Mr. Carson! Yes, the Piaggio P. 32 II designed by Mr. Giovanni Pegna and equipped with a pair of Isotta-Fraschini Asso XI RC-40 liquid-cooled engines, indeed was our mystery airplane. That machine represented a modern design for its time, but, unfortunately, she was a failure due to lack of adequate powerplants.
Yet again, your well deserved triumph.