My listings are only on Mercari. Thank you for viewing. This is an unopened, quite rare, rotary-type three-color ballpoint pen from PILOT. I am selling it to organize my collection. Pilot's pendulum-type three-color ballpoint pens are well-known, but I have never seen an unopened version of this rotary model, nor have I even seen an existing one. I considered keeping it, but the condition is too good for someone like me who is just collecting, so I would like to pass it on to someone who is more enthusiastic about discontinued Pilot models. It's a unique model with an arrow-shaped window to check the ink colors. The price sticker says "Ruby," is that the series name or model name? Judging by the design of the viewing window, the twist action is likely only in the direction of the arrow. The arrow is also expected to change color to black or red to match the ink color. Since it's a multi-pen, the refills are likely 4C standard, but since it's an unopened item and I can't find any information about it, the color combination is unknown. Black and red, and then blue or green? I also don't know whether the refills are replaced by pulling out the barrel or by twisting it off. My explanation is based on speculation, but there is no doubt that this is a rare and valuable model. It is an extremely rare deadstock item still in its original packaging. It is in excellent condition as a collector's item. You can enjoy it as a practical item, or as a display piece still in its packaging. Please consider this opportunity. I will ship it via Rakuraku Mercari or Yuuyu Mercari, with careful packaging. If you are not satisfied with the product after receiving it, I will accept returns, including shipping costs. Thank you.