Helping a friend dismantle a boat with a 140 Mercruiser I/O. The prop is stainless and in real nice shape. I would need to know the dia and pitch to help put a value on it to sell. I have been all over the prop and the only numbers I can find are: 48-73982A4P. I could not find the usual Dia X pitch numbers anywhere. Anyone know how I can find out what I have here?