database for modern multi player auto cards?

Anyone know of a database or resource I can consult for a listing of mult player autograph cards?
For example, I'm trying to find a list of cards released with autos of the Celtics Big Three, Pierce/Garnett/Allen. I know of two cards that exist (they are currently on ebay), and was wondering what other examples may exist.
For example, I'm trying to find a list of cards released with autos of the Celtics Big Three, Pierce/Garnett/Allen. I know of two cards that exist (they are currently on ebay), and was wondering what other examples may exist.
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