If it's missing then it's worth less! Kidding What you have is a Cent that the letter T on the Die was clogged with Grease or Debris. The term is Struck through grease. It's seen many times here on CoinTalk and there really is no premium for this type of minor mint error. Looks interesting though.
It's interesting, but the only time a struck through grease coin is worth much of a premium is if quite a bit of the design is missing due to the clogged die. A single letter is just interesting. If all of say LIBERTY were missing, then your talking a much higher interest level which coincides with a higher premium.