The discrepancy between green and blue results is fairly easy to explain. After all, it makes sense that a watch with a confirmed production total like the
link Tiffany-blue 5711 (170 pieces) has remained somewhat stable and is retaining
link value (even if it's lower than what the very first example sold for, to benefit charity), while the green-dial 5711 – which had no specified production total – is trending
link downward.