Parker
51 (Custom or Signet style cap)
Fountain Pen
Filling System
Aero-metric or Vacumatic (likely Aero-metric given the era)
Condition
Very Good to Excellent
Estimated Value
$100 - $250 USD
Era
Vintage 1950s
Pen Specifications
Pen Type
Fountain Pen
Filling System
Aero-metric or Vacumatic (likely Aero-metric given the era)
Body Material
Lucite (Acrylic Resin)
Trim Material
Gold-Filled
Color / Pattern
Forest Green (Cedar Blue or Forest Green, appears to be Cedar Green/Forest Green with gold cap)
Cap Type
Slip Cap
Clip Design
Classic Parker Arrow clip with blue diamond (if early) or standard arrow
Barrel Shape
Cigar-Shaped / Streamlined
Nib Details
Nib Material
14K Gold
Nib Size
Fine
Nib Type
Hooded, Standard
Nib Condition
Presumed good, hooded nibs protect the tines well
Dimensions
Size / Dimensions
Capped: 138mm, Uncapped: 125mm, Diameter: 11.5mm
Weight Estimate
22 grams, well-balanced
Heritage & Origin
Era / Period
Vintage 1950s
Country of Origin
USA
Rarity
Common
Condition & Value
Overall Condition
Very Good to Excellent
Filling System Condition
Functional or requires sac replacement depending on storage
Estimated Value
$100 - $250 USD
Special Features
Hooded nib design, gold-filled cap with fine lined pattern, landmark aerodynamic styling
Ink Recommendations
Parker Quink Blue or Black, Waterman Serenity Blue
Care Recommendations
Flush with cool water periodically, avoid harsh chemical cleaners, store capped
Interesting Facts
Often hailed as one of the greatest and most reliable pens ever made, designed to withstand high altitude cabin pressure changes.
Overall Assessment
An iconic mid-century American classic combining durability, understated elegance, and superb writing performance.