Conklin

Crescent Filler

Fountain Pen

Conklin Crescent Filler

Filling System

Crescent Filler

Condition

Good vintage condition with age-appropriate wear and discoloration (fading to jade/greenish tint on ends)

Estimated Value

$250 - $400

Era

Vintage 1910s-1920s

Pen Specifications

Pen Type

Fountain Pen

Filling System

Crescent Filler

Body Material

Hard Rubber / Chased and Mottled Rubber with Overlay

Trim Material

Gold-Plated

Color / Pattern

Red and Black Hard Rubber (RHR) Swirl / Mottled

Cap Type

Screw Cap

Clip Design

Conklin ring-top style or specialized clip design characteristic of vintage models

Barrel Shape

Cylindrical with tapered ends

Nib Details

Nib Material

14K Gold

Nib Size

Fine

Nib Type

Flex

Nib Condition

Good condition with flexible tines, minor wear

Dimensions

Size / Dimensions

Approximately 125mm capped, 115mm uncapped

Weight Estimate

Lightweight, approx 15-20g

Heritage & Origin

Era / Period

Vintage 1910s-1920s

Country of Origin

USA

Rarity

Rare

Condition & Value

Overall Condition

Good vintage condition with age-appropriate wear and discoloration (fading to jade/greenish tint on ends)

Filling System Condition

Requires new sac installation for full functionality

Estimated Value

$250 - $400

Special Features

Distinctive crescent-filling mechanism patented by Roy Conklin with locking ring

Ink Recommendations

Standard washable fountain pen inks like Waterman Serenity Blue

Care Recommendations

Vintage hard rubber care; keep out of direct sunlight to prevent further discoloration, use safe dye-based inks, service the rubber sac periodically

Interesting Facts

Mark Twain was famously a major spokesperson and fan of the Conklin Crescent Filler, praising its inability to roll off desks because of the crescent mechanism.

Overall Assessment

A stunning and collectible vintage Conklin Crescent Filler in a highly desirable red and black mottled hard rubber pattern, featuring a flexible gold nib.

Identified on August 10, 2026