I really need a crystal for my early 1960s seamaster 300 auto. Its in the the shop now for repair. the crystal was plastic with a lip, and it broke loose from the lip when he removed it. The numbers he gave me are 165-014 and 550 and I don't know what this is 281103211453. Can anyone help? Thanks Larry
From the Jules Borel website: WATCH MATERIAL INTERCHANGE LIST PN5079 CRYSTAL, FLANGE OME CS#14755 OMEGA CASE - USES CALIBER 552 OME CS#165.0014 OMEGA CASE - USES CALIBER 552 OME CS#2913 OMEGA CASE USES CALIBER 501 OME CS#6050 OMEGA CASE USES CALIBER 500 The old part number is PN5079. However that long number might be the newer Omega part number. They show as available for $30 each. You may want to send your watchmaker there to check if they really do have them: http://www.julesborel.com/ Hope this helps, gatorcpa