Diff of 870004 - Riquartz

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#author("2023-07-24T23:39:36+01:00","default:admin","admin")
#author("2023-12-01T19:37:54+00:00","default:admin","admin")
Case: Stainless steel

Dial: [[LED]] Red, signed "Ricoh Riquartz-LED"

Movement: marked 5M2
Movement: Black plastic, marked 5M2 for 2nd week of Dec 1975, surely sign of Hitachi manufacture.

Battery: 2x