A great and useful design – and this 1970s perpetual calendar is available for a modest outlay.
But there is a catch – this calendar was made by Arlac in West Germany for the Dutch market, so some of the day and month titles might not quite be what you expect.
It's still a great piece of space age-style design though and is able to fit onto any wall. If you fancy it, the calendar is on a 'Buy It Now' for £29.