Stone 59 has fallen and has broken into three pieces. They are numbered 59a (the largest fragment), 59b and 59c from left to right in the first picture.
This is Stone 59a:
Stone 59a exhibits both sharp longitudinal tooling ridges and transverse tooling marks. It is curious that the extensive dressing was evidently not completed prior to the stone being erected.
This is Stone 59b:
This is Stone 59c:
From above, the tenon is clearly visible on Stone 59c:
Estimated above ground weight (total of all three fragments): 21.84 tons