Ring A Date Perpetual Calendar - 19” x 19” x 2. Created from abs plastic that has been pushed into a mold to get it's shape. Web designed by giorgio della beffa in 1970, the “ring a date perpetual calendar” was immediately appreciated by the public all.
19” x 19” x 2. Web designed by giorgio della beffa in 1970, the “ring a date perpetual calendar” was immediately appreciated by the public all. Created from abs plastic that has been pushed into a mold to get it's shape.