This is a very rare original fountain pen from Bungukan Kobayashi, a stationery store in Shizuoka Prefecture, based on the Platinum Century. The nib is EF (Extra Fine). I purchased it and displayed it in a case as part of my collection for a short time, and then stored it. Includes warranty and converter. I have discarded the original Platinum fountain pen box, so I will pack it securely with cushioning material and store it in a plastic case for shipping.