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The Diplomat Aero Funky Petrol Rollerball Pen, Special Edition 2025, fascinates with its innovative PVD niobium surface treatment, which offers a dynamic play of colors of violet, blue and green depending on the incidence of light. The smooth surface ensures a pleasant feel and a flowing writing experience. Typical Diplomat quality and a smooth ink flow guarantee a comfortable writing experience. As a limited collector\’s item, this rollerball pen is an expression of individuality and a coveted object for lovers of exceptional writing instruments.