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DJI'll just help out here...
1) The World Series cards don't have much value at all.
2) The Don Drysdale signed ball depends on many factors, most importantly (outside of authenticity of course) is the ball it is signed on. If it's an Official Rawlings ball and gorgeous, you are talking $75 tops. If the signature isn't perfect and it's a ball minus a label, made of plastic or isn't in good shape...you are talking around $20-30.
Certificates of Authenticities are usually given out by the seller (which is YOU) and really doesn't mean a whole helluva lot. It wouldn't pay to get an Authenticating House to verify your signature because it will cost you some $$$, usually $50-100.
As far as the card goes, doubtful that there is a lot of value there, unless it's a gorgeous NM-MT 1957 Topps.
Good Luck!
DJ