Birra Poretti 1955 Perpetual Calendar

Sunday challenge: does anyone have the same one? Because this adjustable metal and plastic calendar from #birraporetti is #extremely rare… a piece of history still with the #stampmarks from #1955. An absolutely unobtainable piece of #advertisingcollecting… day, date and month are adjustable using the iron wheels on the sides. Measurements 34.5 x 25.5