questions about Yankees 2011 game jerseys

[yankees24]

those who are familiar with or own any Yankees 2011 game jerseys, could you answer some of these questions:

- did any jerseys have their "2011" year flag tag removed?
- what should the 4 digit numbers be on the inner wash?
- what is the purpose of the additional sticker below the jocktag with the interlocking NY logo followed by a serial number, is that MLB Authenticated related?

thanks!