Genuine Rolex Plexi Crystal cyclop 25-118 fits on 1600-1605, 1607, 1610, 1611
ORIGINAL NOS ROLEX CRISTAL PLEXIGLASS CYCLOP #25-118.
According to online ROLEX charts this crystal should fit the following references :
1600-1605, 1607, 1610, 1611 GUARANTEED 1OO% AUTHENTIC ROLEX FACTORY