That was my first thought a die chip,it's always good to get CT members take on it.A few places are selling a DIE CHIP FILLED 9 ERROR ,Ebay and others http://www.worthpoint.com/worthopedia/1954-one-cent-wheat-penny-die-chip-219909998
Die chips are very common in 1940's to 1960's cents. Unless you're desperate to find a very specific die chip, I wouldn't pay any premium for one.
