Shanghai 上海 1523 602
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Shanghai 1523 602
Shanghai apparently produced the 15 series as models containing the new fast-beat 21,600 bph SS1A-K movement, but there are examples of the 1523 with both fast and slow beat movements. As signified by the unusually red number on the dial, this one has a fast-beat movement with a date code of GE (May 1972).