The "68" and "44F10" sounds vaguely familiar from my Euro ECU, but I'll check this evening for sure.
Edit: no, my Euro ECU is "70", and MEC-D007-D
23710-44F1
5 is the auto ECU for the "non air-pollution" (without cat, I guess) S13 200SX, and
23710-44F
07 is the manual ECU for the same, according to our friend,
http://nissan4u.com/.