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Seiko Gyro Marvel 14078 Vintage New Old Stock 17 Jewels SS Automatic Mens Watch - Japan Pre-owned Vintage
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WTS] Seiko Gyro Marvel, first inhouse automatic movement, have Seiko bracelet, ref J14042 : r/Watchexchange
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Origins of the Seikomatic: A 30 jewel Seikomatic 15031D from January 1963 | Adventures in Amateur Watch Fettling
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WTS] [REPOST] Seiko Gyro Marvel, first inhouse automatic movement, have Seiko bracelet, ref J14042 : r/Watchexchange
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