Charles Edghill (Codename X) is not at the above co-ordinates. He is the first of Doctor No's henchmen and, despite being colour blind, can be a little cavalier. BD Eye knows his location but will only reveal it once you give him the correct value of XXXX.
There is nothing at the listed coordinates. NO SPOILERS PLEASE.
Links to other caches in the series:
¤ Jacob's Pillow
¤ BD Eye
¤ Charles Edghill
¤ Eric Coverly
¤ Henry Lopez
¤ Adrian Robinson
¤ Doctor No
¤ Clue 1
¤ Clue 2 (Pink Ribbon)
¤ Clue 3 (Queen's Portraits)
¤ Clue 4 (Artist's Journal)
¤ Clue 5 (Artist's Palette)
¤ Bonus - Lucifer's Musical Box
¤ Bonus - Major Ursa's Gadget Stash
Part of The Final Revelation series of 66 puzzle caches.