I was just checking out our new Realized Auction Lot Database at www.scdauctions.com, and thought it would be cool to lay out the highest selling items sold in the past two years, by player.
I picked out my favorites list and listed the results below. The one piece that stood out the most to me was the Bobby Orr jersey.
I would advise everyone to play around with this neat tool. It is free and can be very useful.

Barry Bonds record-breaking HR No. 756 ball - $752,467 - 9/13/2007 - Sotheby's with SCP Auctions

1952 Topps Mickey Mantle PSA 9 – $282,588 – 12/14/2006 – Memory Lane

Inaugural home run ball hit by Babe Ruth in the 1933 All-Star Game – $700,000 – 7/11/2006 – Hunt Auctions

1951 Bowman Willie Mays PSA 9 – $93,413 – 4/13/2007 – Memory Lane

Significant Joe DiMaggio 1947 Most Valuable Player Award plaque – $281,750 – 5/19/2006 – Hunt Auctions

Scarce 1913 Boston Garter Ty Cobb – $97,750 – 7/10/2007 – Hunt Auctions

1909-11 T206 Honus Wagner PSA 2 – $294,338 – 12/14/2006 – Memory Lane

Christy Mathewson Single Signed – $114,000 – 8/5/2007 – Mastro Auctions

1932 Jimmie Foxx American League Most Valuable Player – $69,265 – 4/27/2006 – Lelands.com

1933 Goudey Lou Gehrig PSA 10 – $274,950 – 9/15/2007 – Memory Lane

Wilt Chamberlain's "Searcher I" Custom-Made Race Car – $91,000 – 5/10/2006 – Grey Flannel

Bill Russell Early 1960s Celtics game-worn home – $56,596 – 12/7/2006 – Mastro Auctions

1959 Johnny Unitas Game Worn Baltimore Colts Jersey and Pants – $93,196 – 4/28/2006 – Lelands.com

Circa 1974 Joe Namath New York Jets game-used white mesh – $19,550 – 12/6/2006 – Grey Flannel

Mid-1960s Ray Nitschke game-worn jersey – $38,838 – 5/5/2007 – Heritage

Circa 1965 Jim Brown game-worn jersey – $57,867 – 8/25/2006 – Lelands.com

Circa 1985-86 Wayne Gretzky Edmonton Oilers game-used, autographed blue mesh jersey – $88,125 – 9/9/2006 – Grey Flannel

1951 Parkhurst Gordie Howe PSA 8 – $8,384 – 4/13/2007 – Memory Lane

1967-68 Bobby Orr game-worn Boston Bruins home – $179,655 – 4/28/2006 – Lelands.com

1991-92 Mario Lemieux Pittsburgh Penguins video-matched 3-patch game-worn jersey – $22,310 – 12/14/2006 – Lelands.com

1984 Michael Jordan Chicago Bulls game-used rookie road MEARS A10 – $70,500 – 4/28/2007 – Robert Edward Auctions

2002 Brett Favre game-used, signed Packers jersey, signed "2002 Game Used Full Game Jersey” – $7,632 – 7/19/2007 – American Memorabilia

1985 Dan Marino Super Bowl XIX game-worn – $33,460 – 5/5/2007 – Heritage

Early 1980s Joe Montana game-worn, signed 49ers jersey, early gamer – $9,611 – 4/7/2006 – American Memorabilia