Well, you certainly qualify for other classes! and thieves are cool too.
Remember, this is AD&D1e, and Method I says "All scores are recorded and arranged
in the order the player desires. 4d6 are rolled, and the lowest die (or one of the lower) is discarded."
See? Not so far off from D20, after all.
if you threw that 16 into Intelligence, and rearranged the others for taste, you could qualify for Illusionist!
Do you need a copy of the AD&D 1e PHB?