Sorry but there is not such thing as "original" greek new testament manuscripts because the new testament was written in Hebrew and Aramaic. The septuagint was the greek translation of the Hebrew new testament!
Back to school for you. The Septuagint is the Greek translation of the OLD Testament. Septuagint - Wikipedia
As for the original NT manuscripts being in Hebrew or Aramaic: so far none have been found. We have only some early church fathers saying that some were.