Simeon has been dealing in Sports and Pop Culture Memorabilia for nearly two decades. His insatiable thirst for history and knowledge, coupled with the possible discovery of untapped treasures at flea markets and garage sales, sparked his interests in collectibles, in particular those dealing in sports and popular culture (autographs, entertainment, music, comic art, etc., etc.). He has written extensively, and appears regularly on PBS's top-rated Antiques Roadshow.