You can list the following trading cards only if they've been professionally graded by a reputable grading company:
1909 Cy Young (T206)
1909 Eddie Plank error card (T206)
1909 Honus Wagner (T206)
1909 Ty Cobb (T206)
1933 Babe Ruth (Goudey #53, #80, #144, and #181)
1933 Lou Gehrig (Goudey #92 and #160)
1951 Mickey Mantle (Bowman #253)
1952 Mickey Mantle (Topps #311)
1966-1967 Bobby Orr rookie card (Topps #35)
1979-1980 Wayne Gretzky rookie card (O-Pee-Chee and Topps #18)
1986-1987 Michael Jordan rookie card (Fleer #57)
You can find this information by clicking on this link
http://pages.ebay.com/help/policies/autographs.html
Scroll down to the "What are the guidelines?" section and click on "Trading cards"