For the 9th installment of our Timepieces section for today, Wednesday, September 9th, we take a close look at a 1970 Seiko Diamatic 7005-6010. “Diamatic” is a portmanteau or a blend of two words, which highlights two specific engineering achievements that Seiko was famous for in the ‘60s and ‘70s. “Dia” came from Diashock, Seiko’s exclusive shock-proof system for the balance wheel ...

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