Hmmm, I'd have to agree in that its post war. Not Electra; too small - the 54H60 prop blades (common to the P-3 and Convair 580 powered by Allison T-56) fitted to the Electra have much chunkier blades. Only the leading edge rubber strip is anti-icing, the cuff at the base of the blade was for aerodynamic purposes and cooling. Since you can read the blade part no, if someone has a HS manual you should be able to find out which type it was fitted. Judging on its size, might be either 23E50 (three blade) or 24D50 or 34D40 (four blade) or something similar, each having the same size hub, just three or four blades.