These convex beveled edge glass crystals are brand new and have none of the problems that are usually seen with NOS crystals such as chips, scratches and label etching. Made in the USA from Schott crown glass, these crystals are as clear as clean water!  This listing is for 1.65 & 2.0mm thickness in any diameter between 41 - 48mm in 0.1mm increments.  Each has a finely ground and polished bevel and 2.5mm internal center clearance.  These fine crystals are intended for those who require only the very best watch material and you will not be disappointed in any way!