This is a genuine vintage SEIKO clock, model MC 025 (M500), designed for robust marine use. Originally installed on ships as a secondary or slave clock, this timepiece is a fantastic piece of functional marine history. It operates on 24VDC, which was the standard for many vessel electrical systems.
This clock was part of a synchronized network, where a master clock would keep all secondary units accurate throughout the ship. This particular unit is being sold as a vintage collectible and is ideal for restoration projects, nautical decor, or as a unique addition to any collection of marine instruments.
Key Features & Specifications:
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Brand: SEIKO
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Model: MC 025 / M500
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Power: 24 Volts DC (24VDC)
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Type: Secondary / Slave Clock
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Origin: Original Ships Equipment
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Condition: Vintage – Sold as-is for collection/display. (Please add a note here about its tested/untested status and any specific condition issues)
Perfect for:
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Marine enthusiasts and collectors
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Restoration projects of vintage boats and ships
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Unique industrial or nautical-themed decor
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Fans of vintage Japanese engineering and SEIKO timepieces













