Early Execution Seiko 6159-7010 Titanium ‘Grandfather Tuna’


Anyone who knows Seiko knows the Tuna story. Professional Japanese divers in the 1960s repeated complained of their 62MAS and 6215-7000 divers failing at depth. Seiko, even then fanatic about customer satisfaction, was quick to draft a solution. Just what they came back with was quite industry-shattering, which was topical . . .as it looked…

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