Autograph certifications

[bob111146]

Recently I've been buying autographed baseball memorabilia and have been researching authenticators. Does anyone know My Favorite Players, Inc., Stacks of Plaques, or Old Time Sports?

Also I have seen autographs certified by Holograms of Willie mays,
Stan Musial and Reggie Jackson. Does any one know if these are legitimate companies or fakes using the names of these players? Any info is appreciated.