Check the listing for details. * Vintage * Kriss Kross Stropper / Razor Blade Sharpener 1927 PATENT. Condition: Used. Listed at 24.95 USD. The Vintage Kriss Kross Stropper / Razor Blade Sharpener is a unique and collectible item that dates back to 1927. This device is designed to sharpen razor blades efficiently, making it a practical and stylish addition to any shaving or barbering collection. Its patented design adds to its historical significance and appeal to collectors. With its vintage charm and functional purpose, this stropper is a must-have for anyone interested in classic shaving tools and memorabilia.