Monza Caliber 15 chronographs are automatic, two-register chroographa, with black dial and registers; 30-minute recorder; Date at 6 o'clock; Tachymeter and pulsations scales on inner bezel
Caliber 15 Monza
Modena — Caliber 15, in Black Coated Case
The Modena was the predecessor of the Monza and and is identical to the Monza, other than the name on the dial; has the same reference number on the case back (150.501). The Modena series was sold in the German market in very limited amounts.