Years 1840-1975 of Hall of Fame players and notable stars
T206 Stars, Allen and Ginter stars, Mickey Mantle, Willie Mays, Ted Williams, Jackie Robinson, Roger Maris, Pete Rose, Reggie Jackson, George Brett, etc.
Vintage Error cards such as 1958 Topps Pancho Herrera "Herrer" spelling, 1909-1911 T206 Sherrie "Magie" mispell, etc.
Football and basketball rookies of Dan Marino, John Elway, Jerry Rice, Joe Montana, Walter Payton, John Unitas, Pete Maravich, Lew Alcindor, Wilt Chamberlin, Michael Jordan, etc.
Wax Boxes of non-junk era releases
1993 SP Derek Jeter in near mint to mint condition and other rare Derek Jeter rookie cards
Lebron James Rookie Cards, autographs, jersey cards, and other rarities (ideally professionally graded)
2006 Topps Alex Gordon (full-card; not "Cards your Mom threw out")
1993 Frank Thomas Rookie Error NNOF (No Name on Front; not "Cards your Mom threw out")
1987 Donruss Opening Day Barry Bonds w/Johnny Ray picture
1989 Upper Deck Ken Griffey, Jr. RC professionally graded a 9.5 or over by PSA, BGS, or SGC (will not buy unless professionally graded)
Certified autographs of hall of famers in major sports
1948 Leaf Baseball Stars and Short Prints
Tom Brady Rookies and certified autographs
Michael Jordan autographs (professionally authenticated by Steiner, PSA/DNA, SGC, Beckett, JSA, or other reputable source
Modern Panini Flawless, Immaculate, and other high-end modern releases of mint or better stars and rookies that have patches, autographs, or 1 of 1 such as Tom Brady, Aaron Rodgers, Anthony Davis, James Harden, Allen Iverson, etc.
Panini Contenders Football, Basketball, and Baseball Rookies and autographs of stars in near mint to mint condition
1980 Topps Rickey Henderson Rookie graded a 9 or better by PSA, SGC, or BVG/BGS
Modern O-Pee-Chee or Tiffany (Glossy) Hall of Fame Rookies in mint or better condition (Ken Griffey, Jr., Roger Clemens, etc.)
Wayne Gretzky and key hockey Rookie Cards
Rare variations or error cards
Certified memorabilia of stars or significant events verified by a trusted 3rd party such as PSA/DNA, Beckett, JSA, Steiner, SGC, etc.
Perez-Steele Autographs of Mickey Mantle, Stan Musial, Ted Williams, and other stars on that caliber
Rare non-sports memorabilia such as certified autographs of The Beatles, 2-Pac, Star Wars, etc.
Cards WE DON'T Buy
Most UNGRADED baseball cards from 1980 to 2000 including baseball rookies and non-rookies of stars including 1985-1987 Mark McGwire, Barry Bonds (unless error or Tiffany), Frank Thomas (unless error or Tiffany), Ken Griffey, Jr. rookie (unless graded mint or gem mint or Tiffany release; no interest in any non-rookie), Roger Clemens, Daryl Strawberry, Dwight Gooden, Barry Larkin, etc.
Most basketball and football from 1980 to 2000 with the exception of rookies of Dan Marino, John Elway, Jerry Rice, Joe Montana, rare Shaquille O'Neal and Jordan
With the exception of Michael Jordan, most basketball cards from 1988 to 2002
Reprint sets such as 1986 Topps re-release of 1952 Topps
Anything that was overproduced and has little value