1930s Wisa Venus-103 "Zerograph" Black Snail Dial Untouched Case

Wisa, "Zerograph", Venus 103, black dial with snail tachymeter scale, 29 mm, untouched condition, circa 1930s.? The 29mm case is equipped with a large onion crown and turning bezel, the black snail dial is precise and beautiful, and the condensed design attracts great taste, and the non-polished case, which completely retains the original shape, is a gem that attracts a sense of presence beyond its size. The watch is equipped with a flyback function that instantly returns to zero when the button on the same axis as the crown is pressed, and is equipped with the rare Venus 103 that enables the measurement of time up to 12 hours by activating the watch hands at exactly zero o'clock.