We have two of these super cool vintage perpetual calendars. They are made in Italy and the days are therefor also in Italian. They are in this vibrant light blue color and have different wheels which you can turn to adjust the day and date. It's a real space age design and they're approximately from the 1970s. We haven't found much online about them unfortunately, so we don't know who the manufacturer and designer are, but they are amazing nevertheless. Both are in excellent condition and will be sold per piece.

Dimensions
Ø: 21 cm