Narumiya Mezzo Piano Rainbow Park Mechanical Pencil 2005 Heisei Retro Vintage *Due to aging, the round ball part of the knock button has a crack-like pattern, but it is not actually cracked. Please check the photos. Due to long-term storage at home, there may be age-related deterioration and fading. I would like to sell this to someone who understands that this is a used item. Thank you.