![]() ![]() ![]() This collector’s guide will cover all of the known Seiko Speed Timer 6139 models with reference AHxxx, made for the General Export market, meaning that it will not include any of the JDM (Japanese Domestic Market) and different region specific models. The revolutionary 6139A automatic movement featured a vertical clutch system and a column wheel.Ī few years later, in November 1973, the Seiko Speed Timer also became the first automatic chronograph to travel into space, worn by Colonel William Reid Pogue during the NASA Skylab 4 mission.īeing such a charismatic watch, and offering a much better quality/price ratio than the expensive Swiss alternatives that later hit the market, the Speed Timer became a worldwide success.Ī series of General Export models was made by Seiko to be shipped and sold in many countries around the world. It was the world’s first self-winding chronograph. In the spring of 1969 Seiko introduced the 5 Sports Speed Timer to the Japanese domestic market.
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