This Vintage Heuer Autavia 2446C Tachy is a highly sought-after chronograph powered by the legendary Valjoux 72 movement. Its iconic inverted panda dial features striking white sub-dials against a deep black background, offering exceptional legibility and timeless motorsport appeal. The rotating tachymeter bezel reinforces the Autavia’s racing heritage, while the compressor-style “C” case (approx. 40mm) provides a robust yet comfortable presence on the wrist. The crisp dial layout—complete with tritium lume, applied markers, and clean sub-register spacing—reflects Heuer’s precision in the late 1960s. The manual-wind Valjoux 72 ensures reliable performance and smooth chronograph operation. Collectible, balanced in design, and rich in history, the 2446C Tachy remains one of the most celebrated references in the Autavia family.