(Sold) This is a 1946 Blue Diamond Parker Vacumatic Major fountain pen in Emerald Pearl celluloid, with a 14k gold Fine nib. The pen has been restored, which included a complete disassembly, a thorough cleaning, an overhaul of the filling mechanism, ink flow adjustment, a nib tune-up, and a gentle polish with a soft cloth (by hand). This is a full-size pen, measuring around 5.1" capped and 0.48" in diameter.
Most fountain pen enthusiasts, even those who do not currently own a vintage pen, would agree that the Parker Vacumatic is utterly beautiful. Most people are also aware of its ingenious, high-capacity filling mechanism. However, fewer people are aware of the pen's incredible writing performance. Quite simply, the Vacumatic is one of the best writers ever made. There, I said it.
What is it exactly that makes the Vacumatic such an awesome performer? As with most things, it's a combination of factors, including its superb ergonomics, the ink delivery system, and, of course, the nib. Made of 14k gold, the nib might look like modern nibs by the likes of Pelikan, Montblanc, Bock, etc., but the similarities are superficial only. The nib has a continuously varying thickness, which combined with the properties of the alloy (developed by annealing, tempering, and hammering) gives the nib incredible elasticity and vibration dampening ability.
As the nib moves across the surface of the paper, it begins to vibrate. These vibrations, let's call them "paper buzz," are experienced as "roughness" or "toothiness." Modern pen makers try to minimize these unwanted sensations by polishing the writing surface (the tipping material) to an extreme degree. While that might give the user a momentary sensation of smoothness, it also compromises the nib's writing ability, reducing friction and impeding capillary flow. Parker's solution to the "paper buzz" problem was radically different, and it involved engineering a vibration dampening mechanism into the nib, but, crucially, without overpolishing the writing surface. The result is a nib that writes consistently at the lightest touch, feels smooth, including rapid upstrokes and cross-strokes, and will give you a hint of line variation if called upon to do so. It's really is a genius piece of writing technology!
The pen's in excellent condition, without any flaws or defects, with gorgeous, gleaming celluloid of incredible depth and vibrancy. The gold-filled trim is in equally great shape. A beautiful specimen!