The Opus 88 Demonstrator fountain pen in Sapphire is a truly unique writing instrument. This large non-postable pen is an eyedropper-filled pen with a piston operated shut-off valve. Featuring a...

The Opus 88 Demo 2020 is a fountain pen that features a clear demonstrator body made from acrylic material, allowing you to see the inner workings of the pen. This...

The Opus 88 Demo 2021 Yellow Fountain Pen is a limited edition fountain pen from the Taiwanese pen company, Opus 88. It features a demonstrator-style design, which means that the...

Opus 88 Demonstrator Green is the 2024 special edition of this beautiful pen with a perfect cylindric design with flat shape. It features a green body with fluo yellow and...

Opus 88 Demonstrator Pink is the 2024 special edition of this beautiful pen with a perfect cylindric design with flat shape. It features a pink body with purple and aqua...

The Opus 88 Demo 2022 Purple Fountain Pen is a high-quality writing instrument that is sure to impress pen enthusiasts and collectors alike. This pen features a transparent purple acrylic...