The Paper Mouse x Opus 88 Fountain Pen FAQ

The Moonlit Voyage and Flowing Friendship fountain pens were created by The Paper Mouse in collaboration with Opus 88. Read more about the making of our very first (and second!) fountain pens in the blog posts below:

Please check this page for FAQs (below the restock updates) and up-to-date news on pen and nib restocks!

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Restock Updates

May 19, 2026: Our final Flowing Friendship restock has sold out and the design has been retired. Thank you all for the love for this pen. We're sad to let it go, but are looking forward to new projects yet to come.

Preorders that include a Kirk Speer Specialty Nib are expected to ship in June, after the nibs arrive at our shop.

Moonlit Voyage, #5 Logo Nibs, and #5 Specialty Nibs will continue to be restocked every few months. You can now sign up for restock notifications on their product pages.

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FAQ

Do the pens come with Paper Mouse logo nibs?

The pens do not come with a logo nib. Each pen comes with a standard Opus 88 branded #10 nib (also know as a Jowo #5), and a mouse logo nib can be purchased and swapped out with it. Since each logo nib is engraved and tuned by nibmeister Kirk Speer, we are not currently able to guarantee the same quantities of these nibs as we have pens available.

Are the pens limited edition?

The Moonlit Voyage pen will be sticking around! You can sign up for restock notifications on the product page.

Unfortunately, due to production challenges, the Flowing Friendship pen is now discontinued.

Can I preorder?

We're not currently taking preorders for the pens. However, we do often have special preorder periods shortly before expected restocks. Keep an eye on the updates section above, and on our newsletter and social media accounts for news about preorders and restocks.

Can I try and/or buy the pens in-store?

Yes! Whenever the pens are in stock online, they are also available at our shop. Additionally, even when they're out of stock, we will have testers at the shop for customers to try out and see in person.

Will the pen stickers and mouse charm be available for sale online?

The stickers (and also two rolls of matching washi tape) are available now! You can find them in The Paper Mouse x Opus 88 collection. The charm, however, was a limited edition launch item and will not be available again.

Do you ship to the EU or _____ country?

At the moment, we're only able to ship to a small selection of other countries, not including the EU and UK. We are a very small team, and we're still working through the logistics of shipping internationally, as every country has different laws and shipping practices. If you'd like these pens (or other Paper Mouse items) to ship to your country, please email us and let us know. The more requests we get from a country or region, the more we'll try to prioritize opening up shipping there.

Are there special care instructions for the pens?

Because these pens are printed with many, many layers of delicate paint, the designs may partially wear off over time with prolonged use. We recommend having dry hands when handling the pens, and being careful if posting the cap.

What do I do if I have a problem with my pen?

Please email hello@studiopatron.mom with photos, a description of what's wrong, your full name, and your 5 or 6 digit order number if you have it. We'll do our best to help!