Cardsharp2 ser#001041752 is a very common many counterfeit Cardharp2 knives. http://www.ebay.com/itm/Iain-Sinclair-Cardsharp-2-Folding-Credit-Card-Knife-FAST-U-S-SHIPPER-/331296625204?pt=Collectible_Knives&hash=item4d22d15234