The Ancient Hour
Seiko Luminous radium dial - 7N42-8260
Seiko Luminous radium dial - 7N42-8260
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Seiko Luminous radium dial - 7N42-8260
The 7N42-8260 is a durable and stylish timepiece featuring a luminous radium dial that glows green in the dark, ensuring excellent visibility in low-light conditions. With a precise quartz movement and a sturdy stainless steel case, this watch is designed for reliability and everyday wear.
Measurements:
- Case Diameter: Approximately 40mm
- Case Thickness: Around 10mm
- Lug-to-Lug: 45mm (approx.)
- Lug Width: 20mm
Features:
- Movement: Quartz (7N42 caliber)
- Dial: Luminous radium dial with a green glow
- Crystal: Hardlex or mineral glass (depending on the model)
- Case Material: Stainless steel
- Water Resistance: Typically 100m (varies by model)
- Functions: Date display, hacking seconds, and precise timekeeping
- Strap: Stainless steel bracelet or rubber strap option
This watch combines style with functionality, making it a great choice for those who value precision and durability.
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Item Number | |
Bezel Color | |
Movement | Quartz |
Reference Number | |
Band/Strap | Leather |
Vintage | Yes |
Brand | Seiko |
Case Color | |
Department | Men's |
Type | |
Band Color | |
Dial Color | |
Lug Width | 18mm |
Model | |
Band Width | 18mm |
Case Size | 40mm |
Case Material | Stainless steel |
Country/Region of Manufacture | Japan |
Display | Analog |
Category |







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Has this been authenticated?
All watches at The Ancient Hour are guaranteed authentic by our trusted watchmakers and us. Certificate included!
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Has this been serviced?
All watches at The Ancient hour are professionally serviced before being offered at our shop. Servicing is done by our trusted watchmakers and gone through very capable hands.
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Mechanical guarantee?
Each watch comes with a 1-year mechanical warranty so if anything goes wrong, please let us know immediately.
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Inspection period?
We definitely want you to love your watch, so you always have 14 days to fall in love or return to The Ancient Hour, no questions asked.
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How much is the shipping?
We exclusively deliver worldwide via UPS Courier service which is free for you.
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General care?
Given that most of our watches are around half a century old, they will need to be treated with extra love and care, and they require servicing every 4-5 years.