To be honest, I have yet to place a scratch on any sapphire crystal, maybe one day when something drastic.
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116613LN 16600SD 16610LV 116710 16710 16570 Speedy 3570.50 PAM25 Oris TT1 and a bunch of G-Shocks. Flipped: Daytona 116520 Seamaster 2231.80
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