Bronze Seikosha 日本海軍 (Japan Navy) Automatic Dive Watch - Seiko NH35 - vintage

For sale is a custom-built solid bronze dive watch inspired by the legendary military dive watches of the 1950s. More specifically, the prototype Blancpain US Navy watch. This is a re-imagination of the watch in Japanese form. This unique piece combines vintage naval styling with modern reliability, featuring a Seikosha-signed dial with Japanese Navy script and a beautifully aging solid bronze case.

The result is a rugged, vintage-inspired diver that looks like a forgotten prototype from an alternate history naval program.

Features

* 40mm solid bronze case (develops a unique patina over time)

* Automatic Seiko NH35 movement

* Hacking & hand-winding

* Reliable and easily serviceable

* 200m water resistance

* Screw-down crown

* Unidirectional dive bezel

* Vintage-style top hat crystal

* Seikosha “Japan Navy” dial

* Fifty Fathoms-inspired design language

* High-quality olive canvas strap

* Matching bronze buckle and hardware

* Luminous hands and markers

* Excellent wrist presence while remaining comfortable for everyday wear

Condition

Excellent condition. Runs well and keeps good time. Bronze case may show light natural patina consistent with the material, adding character and individuality.

Important Note

This watch is a custom fantasy homage build and is not an original Seiko military issue watch, or historical military timepiece. It is a modern custom-built watch inspired by classic military divers and vintage naval aesthetics.

Why You’ll Love It

If you appreciate the look of vintage military dive watches but want modern reliability, this piece offers the best of both worlds. The warm bronze case, domed top-hat crystal, aged lume aesthetic, and unique Seikosha Japan Navy dial create a watch that stands out from the typical homage crowd.

A great addition for collectors of military-inspired watches, bronze divers, or unique custom builds.

Specifications

* Case Diameter: 40mm

* Movement: Seiko NH35 Automatic

* Crystal: Vintage Top Hat Style

* Bezel: Unidirectional Dive Bezel

* Crown: Screw-Down

* Water Resistance: 200M

* Strap: Olive Canvas

* Hardware: Bronze

* Case Material: Solid Bronze

Please feel free to message me with any questions or requests for additional photos. Fast shipping and careful packaging.

* ** This watch is also available in the “US Navy” version. Please message more for additional details. **