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Opus 88 Demonstrator Poseidon Fountain Pen Endless Exclusive 2025

$91.00
$140.00
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SKU:250403 EF-2
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Frequently Bought Together

Myth and ocean life meet in Poseidon, the newest Endless Exclusive. The sea god inspired it, and so did the creatures that live down there — the pen tries to hold that shifting water in your hand.


Up top, the finials carry a transparent light blue like sun on shallow water. Below them the body is cast in a translucent warm sea blue, threaded with swirls of deep ocean blue, coral orange and flashes of golden yellow. Reef fish, hidden anemones, the shimmer of something moving just out of sight.


A trident emblem is engraved on the cap, a nod to the name. Powerful, yes, but graceful too — a small seascape you can carry, and one that tends to push a page along.


It ships in a custom gift box with an exclusive sleeve drawn by our in-house artist @ynnamisfits.

Disclaimer: Please note that the clip is chrome trim, not black. Be sure to review the Youtube Video for more details on the product.

Limited to 200 numbered pieces, Poseidon is a mythical relic for those who feel the call of the deep.

🌟 EndlessPens Unwrapped: Peek inside the mythical world of the Opus 88 Demonstrator Poseidon Fountain Pen with our unboxing adventure. Go check it out:

Specifications
- Type: Fountain Pen
- Body Material: Resin
- Cap Type: Screw
- Filling Mechanism: Eyedropper
- Nib Material: Steel

Dimensions
- Capped Length: 147.6mm
- Posted Length: (cannot be posted)
- Length of Body: 136.5mm
- Length of Cap: 63.6mm
- φ Grip: 11.0mm
- Weight: 27 g
- Max Ink Capacity: 3.56ml

Comes With
- Opus 88 Gift Box
- Pipette


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