Why 62 ? There is 6 sets (tank, caster, healer, MNK, BRD, DRG) with 10 items each (head, body, hands, legs, feet, waist, wrists, ring, neck and ears) + 9 weapons + 1 shield = 70. Am I wrong ?

If you remove weapons it's 61, what is the last one I forget ? Maybe there is the BLM and WHM shields but it's 63 in this case.