Prop Identification

[bns0007]

I received part of a propeller for Christmas this year. I have that main part of the prop. It was definitely a prop that was in a crash due to the way it is broken. I have narrowed it down to a "Modern Prop". It has a couple letters and numbers on it...

MOD. A.T.P. 48.20.72
SER. 899.B

I am having a hard time finding anything that relates to these numbers. Does anyone have any idea?

[Dbahnson]

Doesn't look like any of the "common" design numbers to me.