---
title: "Seiko Automatic Chronograph 40mm Chocolate Brown Dial 6139-8020 1971"
type: "product"
brand: "James Ross Jewellers"
model: "Automatic Chronograph"
reference: "6139-8020"
price: 795
currency: "GBP"
condition: "Pre-owned"
year: 1971
category: "Watches"
subcategory: "Seiko"
availability: "In Stock"
url: "https://jamesrossjewellers.co.uk/seiko-automatic-chronograph-40mm-chocolate-brown-dial-6139-8020-1971-jrw-339"
image: "https://jamesrossjewellers.co.uk/uploads/original_image/addf87cc9e5d955f6ece4d4750279167.jpeg"
updated: "2026-09-26"
---

# Seiko Automatic Chronograph 40mm Chocolate Brown Dial 6139-8020 1971

## Price

**£795** (Finance available from £74.8/month)

## Description

This superb 1971 Seiko Automatic Chronograph, reference 6139-8020, is a characterful example of Seiko’s early 1970s sports chronographs. Its approximately 40mm stainless steel case houses a striking chocolate brown dial, complemented by a contrasting minute track and distinctive yellow chronograph hand.Powered by Seiko’s iconic Calibre 6139 automatic chronograph movement, the watch features a day and date display together with a 30-minute chronograph recorder. This example has been fully serviced, is supplied with a two-year guarantee, and has been fitted with a brand-new high-quality Hirsch leather strap. A great-looking vintage Seiko with plenty of authentic 1970s character.With decades of expertise and a trusted reputation, James Ross Jewellers proudly presents an exceptional collection of luxury and vintage watches.This watch has been checked against technical records to guarantee authenticity and a clean history.

## Specifications

| Specification | Value |
|---------------|-------|
| Brand | James Ross Jewellers |
| Reference Number | 6139-8020 |
| Year | 1971 |
| Condition | Pre-owned |
| Dial Colour | Chocolate |
| Movement | Automatic |
| Gender | Gents |
| Bezel material | Stainless Steel |
| Material | Stainless Steel |
| Keywords | Seiko 6139-8020, Seiko 6139 Chronograph, Vintage Seiko 1971, Brown Dial Seiko, Seiko Automatic Chronograph, 1970s Seiko Watch |
| Papers | Certificate of Authenticity |
| Strap design | Hirsch Leather |
| Model | Automatic Chronograph |
| Case Size | 40mm |

## About The Diamond Box

The Diamond Box is North London's distinguished destination for luxury watches and gold jewellery since 1997. Visit us at 114 Ballards Lane, N3 2DN, London or call 020 8838 3655.


[View this product on our website](https://jamesrossjewellers.co.uk/seiko-automatic-chronograph-40mm-chocolate-brown-dial-6139-8020-1971-jrw-339)