A moon shaped silver sphere, on its bronze cubic base.
Moon’s diameter 8 inch.

Dedicated to the memory of Rabban Gamaliel who was very meticulous about the determination of the new moon, and made in the light of the aid he used to fix the dates of the Holidays.

The half white half black silver moon, in the way it is put on the bronze cube, demonstrates different phases of the moon to explain the phenomenon of the new moon and its aspects.