This is the Faber-Castell TK-fine 9713 drafting mechanical pencil. It's a rare vintage model with a lead hardness indicator window. The deep Castell green body, which is the brand's signature color, and the classic design not found in current models make this a very stylish pencil. [Product Details] Manufacturer: Faber-Castell Model: TK-fine 9713 (Design from the West Germany era) Lead Diameter: 0.3mm Features: Lead hardness indicator window [Condition] Operation: Both the knock and lead advancement are smooth and good. Appearance: There is a sense of use due to age, but there are no scratches on the logo or any particularly noticeable damage. Please check the photos. *Please only purchase if you understand that this is a used/vintage item.