James Spence recently "authenticated" this bad imitation of a George Reeves autograph which just appeared on ebay. See Item number: 230805357499 . And only 9.99 !! What a bargain!! Usually a Reeves autograph will fetch $4-500 on a scrap of paper.
Apparently George was in a "super" hurry when he made that chicken scratch scribble for his first name, then suddenly realized he had plenty of time after all & wrote his last name nice & neat.
George did have a particular style for a quickie signature, but it was nothing like this travesty. As usual, it is buyer beware and buyer educate yourself before making a purchase. Your best defense is knowledge.