【Anonymous Delivery】 Opal OPAL Ink-stopper Type Celluloid Goldfish Fountain Pen Rare Vintage This is an ink-stopper type fountain pen from OPAL, a now-defunct Japanese brand, believed to be from around the 1950s-60s. The ink-stopper type structure involves removing the nib section to supply ink with a dropper. When writing, you loosen the end of the barrel to feed ink to the nib. Length: Approximately 11.8cm My family member used this pen before, and it seems the frequency of use was low. However, it is a vintage item that has been stored for a long time, and ink filling and use are 【unconfirmed】. Also, there is a small dent of about 0.5-1mm on the cap, and a spot of black ink-like stain. Please check the last image. Please understand the above points and consider this item if you appreciate old items. For those looking for a goldfish fountain pen for their collection. ★ I am also listing various other items.