![Vintage Seiko Chronograph ref. 6139-7070 Baby Jumbo – 1977, Seikosis bracelet, Serviced - ChronoTimepieces Vintage Seiko Chronograph ref. 6139-7070 Baby Jumbo – 1977, Seikosis bracelet, Serviced - ChronoTimepieces](https://chronotimepieces.com/ctsitecms/wp-content/uploads/Seiko-Chronograph-ref.-6139-7070-Baby-Jumbo-2.jpg)
Vintage Seiko Chronograph ref. 6139-7070 Baby Jumbo – 1977, Seikosis bracelet, Serviced - ChronoTimepieces
![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 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
![WTS] Vintage Rare Seiko Chronograph - 6139-7070 - 17J Automatic Cal 6139A - 1970's JDM 🇯🇵 --- ✨ Check Video ✨ ---- 399 USD or Best Offer : r/Watchexchange WTS] Vintage Rare Seiko Chronograph - 6139-7070 - 17J Automatic Cal 6139A - 1970's JDM 🇯🇵 --- ✨ Check Video ✨ ---- 399 USD or Best Offer : r/Watchexchange](https://preview.redd.it/wts-vintage-rare-seiko-chronograph-6139-7070-17j-automatic-v0-f572ftbvdp4c1.jpg?width=640&crop=smart&auto=webp&s=b43dfd2fd3bf32752b32076432da77d390ba0b28)