Key Features

• ✔ This vintage Mitsubishi Water-Based Ballpoint Pen Refill set offers a rare glimpse into Japan's nostalgic stationery era. Originally released over 20 years ago by Mitsubishi Pencil (Uni), this set includes a high-quality 0.5mm refill compatible with the Uniball UB R-300 model. Both the pen body and refill are now discontinued and highly sought after by collectors and enthusiasts. The pen features a durable metal body and water-based ink, providing smooth writing performance with a classic retro aesthetic from the Heisei period.
• ✔ The item is in excellent condition, having been used only for testing purposes, and remains a valuable collectible due to its rarity. Please note that, as a long-term stored item, it may show minor signs of age, so cautious buyers are advised.
• ✔ Key Features:
• ✔ - Vintage Mitsubishi Pencil (Uni) Water-Based Ballpoint Pen Refill
• ✔ - 0.5mm Nib Size
• ✔ - Metal Body Material
• ✔ - Discontinued and Rare
• ✔ C:Brand: Mitsubishi Pencil / Uni
• ✔ C:Category: Ballpoint Pen
• ✔ C:Material: Metal
• ✔ C:Ink Color: Black
• ✔ C:Nib Size: 0.5mm
• ✔ C:Nib Material: Steel (implied)
• ✔ C:Condition: Used (Tested, Near New)
• ✔ C:Features: Discontinued, Rare, Vintage, Heisei Era
• ✔ C:Personalized: No
• ✔ C:Water-Based Ink: Yes
• ✔ C:Product Type: Refill
• ✔ C:C
  This item is also available for sale in Japan, so depending on the timing of your purchase, it may be sold out. If you would like to check availability in advance, please feel free to contact us.