Klaus Sickinger sent me the pics of his recently purchased GO Sport Chronograph. In 1999, this watch was one of GO's "sportive flagships", being featured by several advertising campaigns.
Note the interesting bezel and the clear, black dial with military-style numerals.
The shaped pushers support the strong outlines.
The nicely finished cal. 10-60 movement, predecessor of the current cal. 39, is visible through the displayback. In spite of the displayback, the watch is rated to 100 meters.
Many thanks to Klaus for showing us this nice watch!