Diplomat

Aero

Fountain Pen

Diplomat Aero

Filling System

Cartridge/Converter (International Standard)

Condition

Excellent (Minor visible wear)

Estimated Value

$120 - $160 USD

Era

Modern Production (launched 2013-present)

Pen Specifications

Pen Type

Fountain Pen

Filling System

Cartridge/Converter (International Standard)

Body Material

Anodized Aluminum

Trim Material

Chrome/Matte Silver Finish

Color / Pattern

Blue with fluted/grooved texture

Cap Type

Snap Cap (Soft-sliding click)

Clip Design

Streamlined spring-loaded teardrop design

Barrel Shape

Zeppelin-inspired aerodynamic/cigar shape

Nib Details

Nib Material

Steel

Nib Size

Extra Fine (EF)

Nib Type

Standard (JoWo sourced)

Nib Condition

Excellent; well-aligned tines, clean engraving

Dimensions

Size / Dimensions

Capped: 140mm; Uncapped: 129mm; Posted: 158mm; Diameter: 15mm

Weight Estimate

41 grams (Heavy weight with body-centered balance)

Heritage & Origin

Era / Period

Modern Production (launched 2013-present)

Country of Origin

Germany

Rarity

Common

Condition & Value

Overall Condition

Excellent (Minor visible wear)

Filling System Condition

Fully functional converter system

Estimated Value

$120 - $160 USD

Special Features

Unique fluted body design inspired by 1920s Zeppelin airships; tactile matte grip section

Ink Recommendations

Diamine Royal Blue, Robert Oster Fire and Ice, or Diplomat Royal Blue

Care Recommendations

Clean with lukewarm water; avoid harsh chemicals on anodized aluminum; store in a soft pouch to prevent scratches

Interesting Facts

The Diplomat brand was founded in 1922; the Aero model's distinctive shape is a tribute to the industrial design of the early 20th century.

Overall Assessment

A robust, high-quality German-engineered pen known for one of the best out-of-the-box steel nib experiences and a satisfying mechanical cap closure.

Identified on July 5, 2026