Seiko 5 Sports Speedtimer 6139-7020
Seiko Speedtimer 6139 was among the first automatic chronograph watches produced in the world. Its movement Cal. 6139 was considered widely as a very well designed chronograph movement being reliable, compact and efficient at the same time. There are many variants of Speedtimer 6139, and the watch here (Ref. 6139-7020) is nicknamed "Apple" due to its interestingly curved case. As shown by the Japanese Kanji day wheel as well as the 21 jewels movement (international version has a 17 jewels movement), it was a domestic model that was intended for the Japanese market.
Year: Nov 1971
Diameter (excluding the crown): 41mm
Caliber: Original Cal.6139A automatic movement
Accessories: Watch only
Service History: Unknown