This is a comparison of a Gillette Fusion Power cartridge to its counterfeit counterpart. The best way to determine if you have counterfeit cartridges is to simply check if two serial numbers are on the counterfeit cartridge frame as indicated in the pictures below. Please click on images to view in a higher resolution.

All Gillette Fusion Power cartridge will have serial numbers located behind the blades under frame as indicated in picture to the left. The serial number will consist of one letter with four numbers on the left side and one letter with four numbers on the right side. This cartridge serial number is marked in black with B7194 on the left side and Y1301 on the right side.

The left number, B7194, is the same for the 4 cartridge pack in my possession and with two different numbers, Y1301 and Y1201, on two cartridges each to the right side.

The counterfeit Gillette Fusion Power cartridge on the left will have no serial numbers on its cartridge frame as indicated in this picture.

Thanks to wild_wolf5 who mailed to me one of his counterfeit Gillette Fusion Power 8 cartridge packages purchased on eBay from readyfornapoli247 and used for this comparison.