Re: Mystery prop ????
You do realize that you are asking a similar question as -- if it takes four men to screw in a light bulb, how cold is it out?
But, look at the prop. We can infer some things about it by the design. Notice how it has very little rake? notice how the blade root does not go all the way up the hub? Notice the rounded edges? These would be indications (not absolutes) that the pitch is low, not high. How much? without numbers, who knows? The blade profile looks like late Chrysler made by Michigan but the diffuser ring says Evinrude/Johnson to me.
