Vintage 1945 Parker Blue Diamond Vacumatic 3rd Generation order Major Laminated Translucent Black Fountain Pen

Make: Parker
Model: Vacumatic 3rd Generation Major
Origin: USA
Dates from (approx): 1945, 4th Quarter
Finish: Jet Black Translucent Celluloid with Blue Diamond Feathered Clip and Single Jewel
Overall Length: 12.7 cm (5 inches)
Filling Mechanism: Plastic Button Filler with Sac
Nib: Monotone Arrow (original)
Inscription: Geo. S. Parker - Parker Vacumatic - Made in USA - 5
Condition: Excellent. It might work if ink refilled - as found.
Description:

In 1942 came the last of the Vacumatic filling systems, in all respects like the aluminium Speedline fillers, but since the metal was now needed for war purposes the 1942 plungers were made out of plastic. At the same time the blind caps were redesigned and became rounded and lost their tassie rings and jewels. The cap band of the Major is approx 4 mm. The feed usually has the "W" order for wide feed imprint. In 1942 the bottom jewel disappeared and the plastic plunger was added.