Will these fit my 50hp Merc?

[Tom P]

I have the opportunity to pick up 3 props at a bargain basement price. The numbers stamped on the props are 072131 / 072132 and A1814. The add states that they are from a 1989 50hp Merc outboard. I own a 1985 50hp Merc out board serial number A131168. My original prop number is C8 73136 A40L 13P. I have put on a Michigan Wheel Vortex 16P prop 99240916P at times. Will these props 072131 / 072132 and A1814 fit my motor?

Thanks much,

Tom