[JimStinson]

An authentic Roy Castleton autograph would in my opinion sell for anywhere from $1,000-$3,000, at least. As a former Highlander (Yankees) he's on every Yankee's "Want List" I see and also on every single 1907 debut year want list also, Not to mention the Mormon connection.
Baseball autograph collecting is a little different in that very obsure non-hall of famers can command more dollars than big name famers. The autograph of Clancy Smyres who played in only 5 games for the Brooklyn Dodgers in 1944 and died in 2007 would sell for more than Honus Wagner, Rogers Hornsby & Ty Cobb COMBINED.