● Acquired in 1972. ● It wasn't used much and has been stored since then. ● The model number is unknown. The nib is 585. Please refer to the photos for the rest. ● Dimensions: Approximately 134mm (when stored) / 147mm (when writing) ● Barrel diameter: Approximately 12mm ● Cap diameter: Approximately 13mm (excluding clip) ● Cartridge type. ● Ink was applied to the nib for a test write, and then it was rinsed with water. ● There are signs of use, such as minor scratches.