It's the 100 Year Celebration this Year. Nice. Good timing...

The requirements for earning the Centenary Commemorative Certificate are as follows. Everyone who enters and submits a log of contest QSOs will be eligible. To qualify, simply make 100 QSOs along with 20 multipliers. A caveat -- QSOs may be disallowed because of errors in copying QSO information, so be sure to leave a margin, and to gain more than the bare minimum of contacts and multipliers.