For L.Z. -- Seiko 6139-7070 and 6138-3005 Evaluations - YouTube
FS: Vintage Seiko chrono 6139-7070 | WatchUSeek Watch Forums
Vintage Seiko Chronograph ref. 6139-7070 Baby Jumbo – 1977, Seikosis bracelet, Serviced - ChronoTimepieces
VINTAGE MAY/1974 SEIKO 6139-7070 CHRONOGRAPH WATCH. | eBay
Vintage Seiko 6139 Chronograph Automatic "Baby Jumbo" — chronopal
SEIKO CHRONOGRAPH AUTOMATIC 6139 7070 7071 ORIGINAL BRACELET CROWN PETROL DIAL | eBay
FS: Vintage Seiko chrono 6139-7070 380€ | The Watch Site
Seiko 6139-7070 Blue-Dial vs. 6139-7030 black-dial | Flickr
SEIKO 6139-7070 Aquamarine | TiccTacc
Vintage Seiko 6139-7070 BABY JUMBO Chronograph Automatic Black Dial Men's Watch | eBay
Seiko 6139-7070 Blue-Dial vs. 6139-7030 black-dial | Flickr
Seiko 6139 Chronographs Full List | Vintage Watch Inc
Seiko 6139-7070 Chronograph | Seiko, Watches, Military survival gear
1974 Seiko 6139-7070 Automatic Chronograph “Speedy”
Seiko 6139-7070 Automatic Chronograph Baby Jumbo Rare Vintage - Etsy
Seiko 6139-7070 Baby Jumbo Automatic Chronograph 1974 Model - Etsy
1977 Seiko Chronograph 6139-7070 - Birth Year Watches
Seiko 6139-7070 Automatic Chronograph Day-Date, Running Well Great Condition, $285 shipped | WatchUSeek Watch Forums
VTG RARE 1970 SEIKO "AQUATIMER" 6139-7070 CHRONOGRAPH AUTOMATIC SS MENS WATCH | WatchCharts
![Seiko] 6139-7070 "Baby Jumbo" The blue dial is just awesome. I never see these, only the black versions. (x-post /r/JapaneseWatches) : r/Watches](https://external-preview.redd.it/KJHdnGJDNWPlcLPwavl6hL7Xl7_Wy91OGSjb_EodVao.jpg?auto=webp&s=2f6405f54c52ba8659b7032fb097f223b8cca681 "Seiko] 6139-7070 \"Baby Jumbo\" The blue dial is just awesome. I never see these, only the black versions. (x-post /r/JapaneseWatches) : r/Watches")