Parker
51
Fountain Pen

Filling System
Aerometric Filler
Condition
Good to Very Good (some visible micro-scratching on cap and barrel)
Estimated Value
$150 - $250 USD
Era
Vintage late 1940s to early 1950s
Pen Specifications
Pen Type
Fountain Pen
Filling System
Aerometric Filler
Body Material
Lucite (Acrylic Resin)
Trim Material
Gold-Filled Cap
Color / Pattern
Teal Blue or Forest Green (High contrast lighting) with Gold-Filled Insignia/Custom Cap
Cap Type
Slip Cap (CLutch Ring)
Clip Design
Arrow clip with feathered detailing and Blue Diamond or transitional variant
Barrel Shape
Tapered Torpedo
Nib Details
Nib Material
14K Gold
Nib Size
Fine/Medium
Nib Type
Hooded Standard Nib
Nib Condition
Excellent (appears centered with plenty of tipping material)
Dimensions
Size / Dimensions
Capped: ~138mm, Uncapped: ~127mm, Diameter: ~12mm
Weight Estimate
~20-22 grams, well-balanced towards the nib
Heritage & Origin
Era / Period
Vintage late 1940s to early 1950s
Country of Origin
USA
Rarity
Uncommon (Insignia-capped models are more desirable than standard Lustraloy)
Condition & Value
Overall Condition
Good to Very Good (some visible micro-scratching on cap and barrel)
Filling System Condition
Functional (requires inspection of the Pli-Glass sac)
Estimated Value
$150 - $250 USD
Special Features
Iconic hooded nib design to prevent ink evaporation
Ink Recommendations
Parker Quink, Waterman Serenity Blue, or J. Herbin Perle Noire
Care Recommendations
Avoid shimmer or high-sheen inks; flush with room temperature water; do not soak the cap.
Interesting Facts
The Parker 51 was marketed as 'The World's Most Wanted Pen' and was used by General Eisenhower to sign the treaties ending WWII in Europe.
Overall Assessment
A classic example of the 'aerometric' era Parker 51, featuring the highly sought-after gold-filled cap which elevates it from a standard workhorse to a luxury status symbol.