History of 570011B(No. 7) - Riquartz

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- 1 (2021-01-31 (Sun) 14:23:40)
- 2 (2023-07-30 (Sun) 14:12:07)
- 3 (2023-07-30 (Sun) 15:13:24)
- 4 (2023-11-19 (Sun) 13:12:24)
- 5 (2023-12-05 (Tue) 22:08:38)
- 6 (2024-07-10 (Wed) 21:00:42)
- 7 (2025-05-26 (Mon) 16:22:31)

Case: Stainless steel, two piece screw on back with battery bulge

Dial: Tiger eye

Movement: 570

Example serial numbers†

821293
- Dated 8-73 for August 1973
- Early shock jewel

821846
- Dated 8-73 for August 1973
- Early shock jewel

842554
- IC dated 344 for 44th week 1973, (EIA date code)
- Circuit marked 4
- Late shock jewel