I am looking at a prop on Ebay and the only thing the seller possibly knows is that the prop came off of a Sea Ray and it was maybe a Mercrusier. He states it may be aluminum as a magnet didn't stick to it and its black. What he does have are these numbers stamped on prop: 5953 and then 48-78120-19. I assume that the 19 means pitch. Is there a site that I could enter these numbers into to see what engine it is for or do any of you know how to read these numbers?