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The Texan' Quartz, Ref. 5100 BETA 21 Yellow gold wristwatch with date and bracelet Circa 1970 | 勞力士5100 BETA 21型號「'The Texan' Quartz」黃金鍊帶腕錶備日期顯示,年份約1970 | Important Watches: Part II | 2021 | Sotheby's