First designed for MoMA in 1998 this smaller version of the Perpetual Calendar was introduced in 2008 to commemorate the 10th anniversary of its original design. To use simply insert the stand to place the calendar on a desk and move the magnetic balls manually to mark the date and month. Details: • Designed by Gideon Dagan • 5.5" H x 8" W x 2"D Brand new, still in original box