Esterbrook

J Series (Est. J, LJ, or SJ)

Fountain Pen

Esterbrook J Series (Est. J, LJ, or SJ)

Filling System

Lever Filler

Condition

Very Good vintage condition with minor micro-scratches

Estimated Value

$40 - $80

Era

Vintage 1940s-1950s

Pen Specifications

Pen Type

Fountain Pen

Filling System

Lever Filler

Body Material

Celluloid / Plastic

Trim Material

Chrome-Plated

Color / Pattern

Black

Cap Type

Screw Cap

Clip Design

Classic Esterbrook blade clip with embossed lettering

Barrel Shape

Cigar-Shaped / Rounded ends

Nib Details

Nib Material

Steel

Nib Size

Medium (Interchangeable Unit)

Nib Type

Standard

Nib Condition

Clean and well-aligned with good tipping

Dimensions

Size / Dimensions

Approximately 5 inches capped

Weight Estimate

Lightweight, around 15-20 grams

Heritage & Origin

Era / Period

Vintage 1940s-1950s

Country of Origin

USA

Rarity

Common

Condition & Value

Overall Condition

Very Good vintage condition with minor micro-scratches

Filling System Condition

Requires new ink sac for functionality

Estimated Value

$40 - $80

Special Features

Interchangeable nib system allowing screw-in nib units

Ink Recommendations

Standard modern fountain pen inks such as Waterman Serenity Blue

Care Recommendations

Flush with clean water regularly; replace the latex sac periodically

Interesting Facts

Esterbrook was once the largest nib manufacturer in the United States

Overall Assessment

A classic, highly reliable vintage American workhorse pen ideal for daily writing and beginners to vintage pens

Identified on September 16, 2026