Seiko Quartz Pocket Watch – Ref. 7550-001B – Jōetsu Shinkansen Opening Model – September 1982 – Full Set

This Seiko pocket watch Ref. 7550-001B is a rare and historically clearly identifiable commemorative model for the opening of the Jōetsu Shinkansen line on November 15, 1982. Unlike generic railway models, this is a specifically dated and thematically clearly assigned piece from the environment of the then Japan National Railways (国鉄 / JNR).

The engraving on the back allows for a clear interpretation:

• 上越新幹線開業 = "Opening of the Jōetsu Shinkansen Line"
• 昭和57年11月15日 = November 15, 1982
• Central motif: Shinkansen train in front of a stylized chrysanthemum emblem (菊の紋章)
• Serial number: 29xxx

The Jōetsu Shinkansen (Ōmiya – Niigata) was put into operation on exactly this date. This makes this watch not a general railway model, but an official Commemorative Piece.

The combination of the exact opening date, the iconographic Shinkansen motif, and the reference to the state railway organization makes the watch a clearly identifiable contemporary document of Japanese infrastructure history of the early 1980s.

Classification within Seiko Railway Watches

Since 1929, Seiko was an official supplier to the Japanese railways and developed highly precise watches for operational use over decades. In the quartz era, these functional timepieces were increasingly used as representative commemorative objects.

The reference 7550-001B technically belongs to the well-known family of Seiko quartz pocket watches for the railway context, but clearly stands out as a limited edition production due to its specific engraving.

Movement and Design

The built-in Caliber 7550 is a robust and precise Seiko quartz movement, designed for reliability and minimal maintenance – central requirements in railway operations. The design follows classic railway logic: maximum legibility, clear structure, and generous diameter.

The case shows the typical solid construction of these models with a very present size. The watch is in very good condition and is offered as a Full Set, which is a significant rarity factor for these models. The battery has been freshly replaced.

Technical Data

• Brand: Seiko
• Model: Railway / Shinkansen Pocket Watch
• Reference: 7550-001B
• Year of manufacture: September 1982 (serial number 29xxxx)
• Movement: Seiko Caliber 7550 (Quartz)
• Functions: Hour, Minute, Second
• Case: Metal case
• Diameter: approx. 50.3 mm (without crown and ring)
• Total height: approx. 72.5 mm (with crown and ring)
• Thickness: approx. 14.3 mm
• Condition: very good vintage condition
• Special features:
  • Original engraving for the opening of the Jōetsu Shinkansen (15.11.1982)
  • Shinkansen train motif with chrysanthemum emblem
  • Full Set with high-quality cord
  • Fresh battery

Warranty (used)
This is a used item. The limitation period for claims for defects (statutory warranty) is 12 months from delivery.

Note
As this is a used watch, no water resistance can be guaranteed. To protect the movement, the watch should not come into contact with water or moisture.