Black Super Platinum and green Permasharp are both from the Indian plant. Blue is nearly identical less sharp. Pin On Red In my Merkur 23C both the Blacks and the Yellows really tore me up. . Find deals on gillette razors on Amazon. Discover The Best Shave Prep Products For Your Everyday Shaving Needs At Gillette. The yellow SharpEdge older blue Super Platinum and green Super Stainless are all from the St. Gillette Silver Blue vs. Ad Shop Our Collection Of Safety Razors Disposables Replacement Blades. Gms541 Mar 8 2013. Gillette 7 Oclock Black - 7 pack. I used them in an R89 and a Slim Adjustable with the same results. Its normal for the regular buyer to get overwhelmed. Ive had the blue and black. Both these razor blades have a cult following and are known for their stunning performance on the skin. I never tried the yellow and green thugh. The Gillette 7 OClocks last for