Along with the crystal, also included is a pressure-resistant Swiss nylon gasket. Panerai Pam 251 (44mm). 36MM SAPPHIRE CRYSTAL FOR 44MM PANERAI FIRENZE OP6630 PAM 104 ANTI REFLECTIVE. 32MM SAPPHIRE WATCH CRYSTAL FOR 44MM PANERAI 00774,01314 PAM 074 ANTI REFLECTIVE.
eBay