Diff of 580 - Riquartz

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#author("2024-02-29T23:24:09+00:00","default:admin","admin")
#author("2024-02-29T23:25:28+00:00","default:admin","admin")
Quartz calibre, CMOS IC made by Hitachi.

Battery 394

*Example [#k10c3f48]
IC marked "7L1 051" for
IC marked "7L1 051" for 1st week of Nov 1977