PErpetual-Calendar-Vitrac-Imbrogliovitrac-jean-pierre-perpetual-calendar

 

max-vignelli-perpetual-calendar-nava

vintage-perpetual-calendar

Formosa-Enzo-Mari-Danese-calendar-p

Saving the date with a perpetual calendar you save paper, trees, the planet and your money. Not bad.

1 | Imbroglio designed by Jean Pierre Vitrac in 1973 for Piranha;

2 | Max 365 designed by Massimo Vignelli in 1979 for Nava, Milano;

3 | Vintage perpetual calendar from 60s;

4 | Formosa designed by Enzo Mari in 1963 for Danese, Milano.