The dead stock Levi's 502 that was sold with the one wash for the Japanese market. The engraving on the back of the button is "16", which is said to be made of an older fabric than the others. Compared to the 502, which is also listed as a 16-button dead stock, there are some minor differences in detail.
top button (back)
coin pocket (back)
||seat||front rise||back rise||thigh||inseam||opening||total length|