Hello, you are looking at a *** 1RH 11 1/2 Federal Equipoise 3-Blade Bronze RH Propeller 2 1/4 inch " Taper ***

This came from a Boat restoration shop and has been sitting in heated dry storage for many years.  Please see our other listings vintage used boat parts 

Maker is   Federal Equipoise   6-64 on shaft 1RH 11 1/2.

If you have any questions, call or text at (TWO-03) 313-9396.

Thanks Rick.