A vintage Seiko 6139 7070 Chronograph, also known as the Baby Jumbo, featuring a deep navy blue dial and automatic chronograph function. The watch is in good condition for its age, keeping about +1 min per day.

• Condition: Pre-owned
• Year: 1973
• Serial date: March
• Case condition: not polished

This Seiko Automatic Chronograph 6139-7070 is a vintage timepiece from March 1973, featuring a deep navy blue dial and English/Spanish day wheel. It keeps good time for its age, with only about +1 minute per day.

• Condition: Pre-owned, unknown service history
• Serial Date: March 1973
• Chronograph Seconds Hand: available separately
• Chronograph Minutes Hand Issue: resets to before 0 minutes

This vintage Seiko Automatic Chronograph 6139 7070 Baby Jumbo is a rare find, featuring a deep navy blue dial and English/Spanish day wheel. The watch has been kept in good time, with only a +1 min per day deviation.

• Condition: Pre-owned, serviced
• Serial date: March 1973
• Service history: unknown
• Accuracy: +1 min per day

A vintage Seiko Automatic Chronograph, the Baby Jumbo, from March 1973. It keeps good time for its age and features a deep navy blue dial.

• Condition: Pre-owned/Vintage
• Age: 1973
• Serial date: March 1973
• Service history: Unknown

The Seiko Chronograph 'Baby Jumbo' Petrol is a highly sought-after collectible from the 1970s, known for its pioneering movement and striking aesthetic.

• Condition: Running well, no service history
• Case size: 40mm
• Lug width: 19mm
• Box/papers: No box or papers included

The Seiko 6139 7070 Baby Jumbo is a vintage automatic chronograph watch that keeps good time, with only a +1 minute per day discrepancy. The chronograph seconds hand needs to be manually placed during service, and the minutes hand resets upon stopping. The case may have been polished, but it's unclear.

• Condition: Pre-owned with unknown service history
• Diameter: 44mm
• Movement: Seiko 6139 movement

A vintage Seiko Baby Jumbo Automatic Chronograph from March 1973, featuring a deep navy blue dial and English/Spanish day wheel. The watch has been well maintained and keeps good time, with some minor functional issues with the chronograph seconds hand.

• Condition: Pre-owned/Used
• Year Of Production: 1973
• Serial Number Date: March
• Movement Service Status: Unknown

This Seiko Baby Jumbo 6139 7070 is a vintage automatic chronograph from 1973. The watch keeps good time, with an average gain of +1 minute per day. It features a deep navy blue dial and has been well-maintained.

• Condition: Pre-owned/vintage
• Serial date: March 1973
• Service history: Unknown
• Chronograph seconds hand: Separate component

A vintage automatic chronograph from Seiko, featuring a navy blue dial and English/Spanish day wheel.

• Condition: Good (for its age)
• Serial Date: March 1973
• Service History: Unknown
• Chronograph Seconds Hand: Separate (to be placed during service)