Seiko 6139-7030 Baby Jumbo

The Seiko 6139-7030 'Baby Jumbo' represents a significant piece of horological history as part of Seiko's groundbreaking 6139 chronograph series. This model earned its 'Baby Jumbo' nickname from its bold yet wearable case dimensions.
 
Key Features:
- Historic 6139 automatic chronograph movement
- Original 'Baby Jumbo' case design
- Day-date complication
- Chronograph function
- Internal rotating bezel
- Luminous hands and markers
- Original crown and pushers
- Exhibition caseback
- Original bracelet
 
Technical Specifications:
Movement: Seiko 6139 automatic chronograph caliber
Case: Stainless steel 'Baby Jumbo' design
Crystal: Original Seiko specification
Dial: Multi-function chronograph layout
Water Resistance: Original sports specifications
Bracelet: Original Seiko steel bracelet
 
Historical Significance:
The 6139 series was part of the historic race to create the world's first automatic chronograph in 1969, making it a pivotal piece in watchmaking history. The 'Baby Jumbo' variant offered a perfect balance between presence and wearability.
 
Special Features:
- Automatic chronograph movement
- Column wheel chronograph mechanism
- Day-date display in dual languages
- Inner rotating bezel
- Original Seiko signed crown
- Chronograph pushers in excellent condition
 
Condition Details:
This Baby Jumbo is presented in exceptional vintage condition. The automatic chronograph movement has been professionally serviced, with all functions operating smoothly. The case retains its original finishing, and the dial shows a beautiful patina that collectors prize in these models.
 
Collectible Status:
- Increasingly sought-after 6139 series
- Desirable 'Baby Jumbo' variant
- All original parts
- Excellent example of early Seiko chronographs
- Full service history included
 
Complete Package:
- Original Seiko bracelet
- Service documentation
- Original box
- Period documents
 
Perfect For:
This Seiko 6139-7030 is ideal for collectors seeking a significant piece of chronograph history. The Baby Jumbo offers the perfect combination of historical importance, technical innovation, and everyday wearability.