Seiko

Seiko Caliber 7025: Complete Movement Guide
A Seiko from 1976 and another from 1979 may share the same automatic movement yet look as if they belong to different design families. The first has a broad, sculpted case and an unconventional arr...
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Seiko Caliber 7005: Complete Movement Guide
Seiko 7005A explained: verified 17-jewel automatic specifications, date-only calendar, crown operation, winding architecture and two photographed 1970s Seiko watches.
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The History of Seiko 5: What Does the “5” Mean?
What does Seiko 5 mean? Explore the original five 1963 Sportsmatic features, Seiko 5 Sports history, and photographed vintage models across decades.
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Seiko 6139 Pogue: Models and Variations
A reference-focused guide to Seiko Pogue 6139-6002 models, yellow and black dials, Skylab history, movement design and collector identification.
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Seiko Actus: History, Models & Movements
Discover Seiko Actus history, compare 6106, 7019 and 6306 automatics, and explore two original 1974–1976 watches in the Vintage Watch Studio archive.
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Seiko Rainbow: Models, Dials & Identification
Learn to identify vintage Seiko Rainbow designs through two real archive models: the 1982 7009-316A rainbow arc and 1979 11-4470 mother-of-pearl dress watch.
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Seiko Hi-Beat: Vintage Movements & Models
What does Hi-Beat really mean on a vintage Seiko? Compare eight-beat and ten-beat movements, Seiko milestones and actual 1970s watches from the VWS archive.
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Seiko Lord Matic (LM): History, Models & Movements
Explore Seiko Lord Matic history, standard LM versus LM Special movements, distinctive 1970s models and original Vintage Watch Studio archive photography.
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Seiko 6139 vs 6138: Vintage Automatic Chronographs Compared
Compare Seiko 6139 and 6138 automatic chronographs, their timing registers, winding systems and buying checks using original VWS archive watches.
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Compare the Seiko 6306 and 6309 movements, Turtle diver references and lesser-known Actus and dress-watch models.
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Vintage Seiko Case Shapes: TV, Square, Cushion & Tonneau
Explore four distinctive vintage Seiko case shapes with original reference examples, photographs, fit considerations and identification tips.
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Vintage Seiko Chronograph History: From 6139 to 7A38 & 7A48
Trace Seiko chronograph innovation from early mechanical stopwatch watches to the multi-register analog quartz era, with real archival examples.
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1970s Vintage Seiko Watches: Designs, Movements & History
Discover how Seiko’s 1970s watches combined automatic chronographs and day-date classics with quartz, SQ and digital innovations.
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Understand what separates vintage Lord Matic and Seiko 5 watches, from movement functions to designs and buying checks.
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Seiko Dial Markings Explained: Codes, Text & Factory Symbols
A practical guide to vintage Seiko dial codes, factory emblems, dial language and accurate reference identification, illustrated with real watches.
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