Establishing the Conklin Pen Company as a leader in American writing instruments, the Crescent Filler became one of Conklin brand’s signature pens and changed the industry forever. Founder Roy Conklin from Toledo, Ohio, patented the design for the first self-filling pen in 1897, causing his company to thrive. They gained the approval of author Mark Twain, who became the official spokesperson for the Conklin brand.
Handmade in idyllic Florence, Italy, the fountain pens utilize Conklin’s groundbreaking original design that still works as effortlessly as it did a century ago. Each pen is engraved with Mark Twain’s signature along the band, and maintains the original Conklin spring loaded rocker clip that was patented in 1916, which is the perfect addition to any pocket, jacket, or coat.
We are excited to exclusively offer this pen with a German-made nib from Bock. For over 75 years Bock has been manufacturing parts for fine writing instruments and we’re confident that you’ll love how these nibs enhance your writing experience!
The Bock logo will be imprinted on the nib rather than the imprint shown in the photo, and will not have an imprint to note the nib size.
This exclusive offering only applies to the Extra-Fine, Fine, and Medium nibs, and does not apply to the Omniflex nibs.
- 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.
- Crescent Filler
- Grip Material
- Nib Size
- Extra-Fine, Fine, Medium, 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
- 19.8mm (0.78in)
- Diameter - Cap (without clip)
- 14.6mm (0.57in)
- Diameter - Cap (with clip)
- 18.8mm (0.74in)
- Diameter - Grip
Measured from the place most people choose to rest their fingers, which varies with each pen.
- 9.8mm (0.39in)
- Length - Body
The measurement from the back end of the barrel to the tip of the nib.
- 128.5mm (5.06in)
- Length - Cap
- 66.1mm (2.60in)
- Length - Nib
The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.
- 23mm (0.9in)
- Length - Overall (Closed)
- 141.0mm (5.55in)
- 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.
- 164.8mm (6.49in)
- Weight - Body
- 18.0g (0.63oz)
- Weight - Cap
- 11.0g (0.39oz)
- Weight - Overall
- 29.0g (1.02oz)
- Max Ink Capacity - Piston Vac
The maximum volume of ink that can fit in the pen when using the built-in piston or vacuum filling mechanism.