James | Seiko 6139-7070 for a chilly Monday #bluewatchmonday #seiko6139 #61397070 #vintagechronograph #womw #wristcheck | Instagram
Seiko 6139-7070, one of the petrol watches, on a vintage white Tropic Star strap #seiko #seiko6139 #61397079 #vintagechronograph #vintag... | Instagram
![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)