16 has stays on hulls and 14 has stays on tramp frame. That said between the dolphin striker and what appears to be adjusters on the hulls I say 16. However its likely that the seller knows what he or she has.
-- Greenville SC
Offering sails and other go fast parts for A-class catamarans --
That is a H16, if the seller thinks it's a H14, do like cezo823 says, after you check the cat out, make them a cash offer. Just maybe you go home with a H16 in good condition for a great price........