Diff of 512070 - Riquartz

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#author("2025-11-02T14:08:38+00:00","default:admin","admin")
#author("2025-11-02T14:09:40+00:00","default:admin","admin")
Case: [[Tungsten carbide]] either polished or gold plated, gold plated stainless steel bracelet 

Dial: Onyx or stardust onyx

Cal [[510]]

*Examples [#gb3d32de]
** [#d8b6bee7]
-Hitachi LSI CMOS signed "7E4 841" for 4th week of May 1977
-Quartz signed "NDK 75F" [presume for May 1977]


** [#ac4253ee]
-Hitachi LSI CMOS signed "7L4 841" for 4th week of Nov 1978
-Murata Quartz signed "MU88F" [presume for Murata Aug 1978]