
Product Description
The Opus 88 Demonstrator fountain pen 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 sharp alternating material scheme of frosted and clear resin, this pen’s design stands on its own. It has a sleek black clip and a silver stainless steel #6 JoWo nib and includes a glass eyedropper to fill the pen with your favorite ink.
Note: JoWo is transitioning their nib designs from the old scroll pattern to a more simple design. Stock is currently mixed; what you receive may not necessarily match what is photographed.
An ebonite piston and rubber gasket seals the feed off from the barrel when fully depressed, reducing the risk of leakage and burping. By unscrewing the blind cap and loosening the rod at the rear of the barrel, you open up the ink flow to the feed. During long writing sessions, leave the shut-off valve open to take advantage of the impressive ink capacity. Having a completely clear pen body allows you to see both your current ink level and your nib while capped.
Availability & Sizing
Product Details
Price History
Historical Data
Last 1 days of price history
| Date | Low Price | High Price | Average Price | Vendors |
|---|---|---|---|---|
| May 12, 2026 | $130.00 | $130.00 | $130.00 | 1 |
Price Statistics
Description
The Opus 88 Demonstrator fountain pen 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 sharp alternating material scheme of frosted and clear resin, this pen’s design stands on its own. It has a sleek black clip and a silver stainless steel #6 JoWo nib and includes a glass eyedropper to fill the pen with your favorite ink. Note: JoWo is transitioning their nib designs from the old scroll pattern to a more simple design. Stock is currently mixed; what you receive may not necessarily match what is photographed.An ebonite piston and rubber gasket seals the feed off from the barrel when fully depressed, reducing the risk of leakage and burping. By unscrewing the blind cap and loosening the rod at the rear of the barrel, you open up the ink flow to the feed. During long writing sessions, leave the shut-off valve open to take advantage of the impressive ink capacity. Having a completely clear pen body allows you to see both your current ink level and your nib while capped.
Additional Info
Vendor Comparison (1 stores)
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| Vendor | Price | Stock | Last Updated | Action |
|---|---|---|---|---|
The Goulet Pen Company Best Price | $130.00 | Out of Stock | 5/12/2026 | View Product → |





