Got a few 15 spline props for sale, all used
19p Mercury High Five, from a 130hp Evinrude, good used condition 165 + shipping

13x18p Quicksilver, Good used condition, one small nick in a blade. 89 + shipping

11x20p Cleaver, says Petty 2 on the hub, superb condition 150 + shipping

12.5x21p, believed to be from a Mercury, 79 + shipping