While certainly not the first one on the market, the Pro-Mold Magnetic Holder is definitely the best magnetic trading card holder on the market. The Pro-Mold Magnetic Trading Card Holder features a gold magnet that provides a super-strong enclosure, which allows the holder to stay closed when dropped while it's still easy enough to open up and put a trading card in it. This holder features a tab on the top of each side that allows you to use a quarter or set of fingernails to open the holder up easily. This holder also features recessed, "arrowhead" corners to protect the card's corners if you drop them.
Aliases: Magnetic Holder, Magnetic Trading Card Holder, One-Touch, One Touch