Very scarce and all original Leonidas (by Heuer) one button chronograph with the highly collectable regulator dial from the mid to late 1930's. Pristine factory original silvered dial is untouched and in mint condition showing very light aging. Sunken constant time dial at 12:00. Blue telemeter scale and black Arabic numerals for chrono seconds around the outside of dial and blue tachymeter snail scale at center. Signed Chronographe Leonidas Swiss Made. Sunken accumulated 30 minute chrono dial at 6:00. Original blued steel hands are mint. Stainless steel snap back case with chromed bezel is excellent and measures 33mm x 40mm x 10mm. The crisp and clean 15 jewel Swiss movement is unsigned, guaranteed original to the watch and is identical to the Heuer model of this watch. This movement is running well, keeping good time and all chronograph functions are operating properly with hands snapping back to zero smartly. Fitted with a new alligator print black leather 14mm strap.