Wall Calendar Ring a date, Giorgio Della Beffa, Euroway, perpetual calendar

Iconic perpetual calendar ring-a-date designed by giorgio della beffa for euroway, turin in 1970.  This amazing piece of space age design, exposed at moma and immediately recognized as an icon of 70s design. The proposed specimen is a rare and original piece dating back to the 1970s and not a subsequent reproduction. Item. Wall calendar. Designer. Giorgio della beffa. Maker. Euroway. Period. 70s. Country. Italy. Material. Plastic. Color. White, black, red. Dimensions  47 X 47 X 6. Condition. Excellent vintage condition. A little and invisible chip in the rear corner.