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Vintage Grand Seiko 56GS Hi-Beat Day-Date (Ref. 5646-5010) Buying Guide

1970s Grand Seiko watch, 5646-5010, 56GS review 0 comments

Vintage Grand Seiko 56GS Hi-Beat Day-Date (Ref. 5646-5010) Buying Guide

Discover the vintage Grand Seiko 56GS Hi-Beat Day-Date “TV Dial” (Ref. 5646-5010) — a bold 1970s classic. Learn specs, history, collector tips, and 2025 price guide for this quirky square-cased Grand Seiko.

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