History of 512023(No. 3) - Riquartz

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- 1 (2021-01-16 (Sat) 08:20:52)
- 2 (2022-10-02 (Sun) 12:12:54)
- 3 (2023-11-28 (Tue) 22:55:48)
- 4 (2023-11-29 (Wed) 09:05:55)

Case: Rectangular gold plated, stainless steel snap on back, without crown but two pushers to adjust time

Dial: White, gilt hour markers, signed "Ricoh, Chateau, Riquartz, Japan E-512-16-04"

Movement: Cal 510

Battery 384

Crystal

Crystal gasket

Case back gasket

Pusher gasket

Example†

Dated 77-Y” for Nov 1977, quartz cannister marked MU91F