K Sabatier Authentique Carbon series knives are forged from XC75 carbon steel tempered to 54-56, soft compared to Japanese knives but still with good edge life. These traditional style French carbon steel knives have a great toughness and are super easy to sharpen.
Not stainless so care must be taken to avoid rust; wipe dry during heavy use and or after washing (soap is OK, avoid using the abrasive side of sponge if possible) always keep knife from soaking and dishwashers.
Thiers France at the Aine & Perrier Sabatier works. Aine & Perrier Sabatier (aka K Sabatier) has remained a family run business since its inception in the 1830's. The registered K trademark was recorded in 1834 making them arguably the oldest of the many Sabatier companies.