need to find a prop!!

[cwglass1@hotmail.com]

I have a 1973 mercury model merc 40 outboard engine that was made in belgium. It is a 4hp engine but unlike the american made 4hp, the shaft only has 7 splines and the prop is left handed. I cant seem to find one anywhere, if anyone out there has one or knows where I can find one please email me cwglass1@hotmail.com. The serial number on the engine is 9147987.