Ok, I finally got almost precise data.
Fretting hand length from bottom to the top of the MF: 19 cm.
Index: around 7,5-6 cm;
MF: not more than 8,5 cm;
Ring: weird digit ratio on the fretting hand, max 7,8-8 cm;
Pinky: 6,5-6 max.
Thumb was the most difficult to figure out, but not longer than 7 cm.
Fingers aren't superlong at all. That photo with his hands resting on his knees isn't extraordinary. His fingers were super-thing then, which creates sort of an optical illusion.
But in regards to the palm breadth - it is enormous: 10,3 cm. Ok, now this thread is totally done :-).