About this one
TEST DATA. A 1972 Seiko 6139 automatic chronograph with the blue dial, on its original bracelet. One of the first automatic chronographs made, and it went to space on a wrist that was not supposed to be wearing it.
TEST DATA. Wearing. It winds itself, and the chronograph runs from the pusher at two and resets from the one at four.
Do not use the chronograph underwater and do not reset it while it is running. Both are how these movements get broken.
TEST DATA. The 6139 is common. A 6139 with an original blue dial that has not faded to grey, an unpolished case and a working chronograph is not.
This one has all three, and the bezel is the correct one for the reference rather than a later swap.
Condition
How it looks
TEST DATA. Case unpolished with the original brushing visible on the lug tops. Dial deep blue, no fading. Crystal has two light scratches. Bracelet shows stretch and one replaced link.
How it works
TEST DATA. Winds on the wrist and runs at about +18 seconds a day. Day and date both change and both quickset. Chronograph starts, stops and resets to zero cleanly, which is the part that usually fails.
Every photograph on this page is of this exact piece.
The facts
| Year | 1972 |
| Made by | Seiko |
| Made in | Japan |
| Weight | 160 g |
| Object | No. T-021 |
In the box
TEST DATA. Watch and bracelet. No box, no papers.
