on saleOpus 88 Jazz Fountain Pen - Solid Black

Product Code OP-97010725-EF

In Stock

out of stock

on saleOpus 88 Jazz Fountain Pen - Solid Black

Product Code OP-97010725-EF

In Stock

out of stock

Solid Black
Nib Guide

Not sure which size nib is best for you?

Try our Nib Nook tool to view and compare nib widths using our writing samples. Learn more ›

This Opus 88 Jazz fountain pen in Solid Black has a black barrel and cap, and is accented by black hardware. This large postable pen is an eyedropper-filled fountain pen with a piston operated shut-off valve. It has a silver stainless steel #6 JoWo nib and includes a glass eyedropper to fill the pen with your favorite ink.

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. An ink window allows you to see your remaining ink in the barrel.

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.

Opus 88
Fountain Pens

Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.

Body Material
Cap Rotations

For pens with a screw-cap closure, how many rotations it takes to uncap/recap the pen.

Cap Type

How the cap is opened/closed from the barrel of the pen. Some common options include Snap-Cap, Screw-Cap, Magnetic Cap, or Capless (no cap).

Compatible inks & refills

Which ink this pen will accept. Choices include bottled ink and various styles of pre-filled ink cartridges.

Bottled inks
Filling Mechanism

How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.

Grip Material
Nib Size
Extra-Fine, Fine, Medium, Broad, Flex
Nib Color
Nib Material

Whether or not the cap fits securely onto the back of the barrel when open.


Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).

Diameter - Body
15.2mm (0.60in)
Diameter - Cap (without clip)
17mm (0.67in)
Diameter - Cap (with clip)
20.3mm (0.80in)
Diameter - Grip (mm)

Measured from the place most people choose to rest their fingers, which varies with each pen.

Length - Body

The measurement from the back end of the barrel to the tip of the nib.

133.2mm (5.24in)
Length - Cap
69.6mm (2.74in)
Length - Nib

The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.

23mm (0.91in)
Length - Overall (Closed)
151.2mm (5.95in)
Length - Overall (Posted)

When the cap of the pen is posted onto the back of the pen body, this is the measurement of the entire pen including the nib.

174mm (6.85in)
Weight - Body

If a converter is included with the pen, this weight is reflected in the total.

16g (0.56oz)
Weight - Cap
12g (0.42oz)
Weight - Overall (g)
Max Ink Capacity - Eyedropper

The maximum volume of ink that can fit in the pen when filling the entire barrel of the pen via eyedropper.


Customer Reviews

Based on 4 reviews
Robert H.
Inking is easier with a syringe

Enjoying this pen tremendously. One suggestion: use an ink syringe instead of the eyedropper that is included. Using the eye dropper is bit awkward because of a part or post in the center of the barrel. The tip of the eyedropper is a bit too broad. A syringe, however, makes the post a non-issue.

Tate S.
Amazing Pen

I love this pen, I got it in EF and it writes very smoothly. I have another Opus and this one is just as smooth and puts down a very wet line for an EF. It is wider than the F line in my Pilot 823, for comparison by just a little. Plus, you can switch the nibs out with any #6 nib whenever you want to try something new! The balance is also very good, I write with it unposted and it feels great.

Sleek black pen

I have a bunch of Opus88 pens, and this is the sleekest for sure: tapered ends, shiny plastic body. I really appreciate the dependably fine nibs and the clever but convenient design that keeps the ink from burping out of the eyedropper pens.

Randy H.
Glad they avoided calling it a "Stealth"

Ergonomically it is right ( write?) for my paws, and I have medium size hands ( well at least the gloves I wear are medium ). Always enjoyed the amount of ink the Opus holds especially handy when one won't be home with tmy bottled inks to refill an ink cartridge or converter or if I wants to draw/sketch outdoors I need not worry about running out of ink. My nib preference with my Opus 88s is Extra Fine.....and never had any issues with them, always wrote without a hitch. I loaded mine up with Noodler's Clairvoyance Slate with no hiccups.Can't go wrong with an Opus88 if one is looking for a pen with good ink capacity, this holds true with their mini pocket pens as well.As usual, when it comes to Shipping, packaging of their products or taking care of issues that may one encounter, Goulet is a top notch company.

FAQs about Fountain Pens

How do I fill a fountain pen with ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the pen's filling mechanism, which you can find in the Technical Specs section above. 

Here's a quick definition of the most common filling mechanisms:

  • Cartridge - A small, disposable, sealed plastic reservoir that holds fountain pen ink. These come pre-filled with ink, and typically you just push to insert them into place and you'll be ready to write! Check out our quick guide here.
  • Converter - A detachable and refillable ink reservoir that allows you to use bottled ink in a cartridge-accepting pen. Typically you will install the converter into the grip section, dip the nib/feed into the ink, and twist or pull the converter knob to draw ink into the converter. Here's a video for how to fill a cartridge/converter pen using a LAMY pen as an example.
  • Eyedropper - A pen that utilizes the entire barrel as a reservoir for ink. Ink is directly filled into the barrel, allowing for a high ink capacity. Here's a video on how to do it!
  • Piston - A type of filling system that uses a retracting plunger inside a sealed tube to draw ink into a pen. They are typically either twist or push-operated. These pens cannot accept cartridges or a converter, and only fill from bottled ink.
  • Vacuum - A push-style piston that uses pressure to fill the large pen body with ink. They seal the ink chamber when closed, making it ideal for flying without risk of leaking. Check out our video on how to use a vac filler here.

Check out more info on these filling mechanisms including a video on how to fill each one on our blog.

How do I clean a fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the filling mechanism, but it mostly comes down to flushing it out with water, and sometimes a little bit of Pen Flush if the ink is really stuck. 

It's a bit easier to show than to tell, so we've put together a few quick videos showing you the process:

How often do I need to clean my fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We recommend a good cleaning every 2 weeks, and any time you change ink colors. 

Water will usually do the trick, but we recommend you use our Goulet Pen Flush if the ink has been left in the pen for a while and could have dried up, or when you’re switching ink colors.

My pen won’t write! What do I do? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

First things first... make sure you have ink in the pen! Be sure that the ink cartridge or converter is seated properly in the pen, and that you aren't out of ink.

We always recommend you give your pen a good cleaning first, using our Goulet Pen Flush, or a drop of dish soap in some water. New pens often have some machining oil residue left in the feed, so a good cleaning often does the trick first.

If that still doesn't work, try priming the feed. This consists of either dipping your pen nib and feed in ink, or forcing ink from the converter down into the feed. 

If it’s still not working after that, please reach out to us so we can help! 

What's your return policy? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

You can submit a return request within 30 days of your order date. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.

Please note we are unable to accept a return of any Namiki or Sailor Bespoke fountain pen for any reason once it has been used with ink. Please thoroughly inspect and dry test the pen before use.