(Sold) This is a 1946 Blue Diamond Parker Vacumatic Major fountain pen in Emerald Pearl celluloid, with gold-filled trim, and a 14k gold XF Semi-Flex 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). I use only very gentle restoration techniques and use only the highest-quality replacement materials and specialist tools. The pen measures slightly over 5" capped and 0.48" in diameter.
In the late 1930s and throughout the 1940s, the pen industry underwent a major shift toward sturdy, dependable, always-ready, consistent, self-filling pens that were supposed to perform equally well regardless of one's ink, writing technique, paper, air pressure and temperature, and other, sometimes extreme, conditions. Each major brand offered a lifetime warranty on their flagship models, and made sure their pens would not require servicing often.
In terms of nib manufacturing, there was a definite transition toward less flexible, larger, thicker nibs with plenty of tipping material, so that they would comply with the dominant handwriting style of the era. For most people, including office professionals, Ornamental Penmanship was quickly becoming less practical and was gradually phased out in favor of the more rapid and legible business cursive, such as the Palmer Method. Flexible nibs were still available as special-order items, but the vast majority of gold nibs made at the time were semi-flexible or firm.
Parker's nib design focused on improving the gold point's ability to absorb vibrations caused by dragging the tip across the surface of the paper. Such vibrations are often perceived as unpleasant, and nib makers went to great lengths to minimize them. The Vacumatic nib was a great example of this new type of design. The nib has variable thickness (strategically distributed), which further improves its "compliance," its ability to seamlessly conform to the writer's movement, responding to even the slightest variation in pressure, direction, and rapidity, while soaking up microscopic paper bumps with ease. This particular nib lays down a line of about 0.3 mm (on my paper) and spreads easily to about 0.7 mm with slight increase in writing pressure. This is not a fully flexible nib, so please do not try to push it beyond its limit, but it can be used rather effectively to instantly add character to your handwriting.
The pen is in excellent condition, without any flaws or defects. The Emerald celluloid has incredible depth, vibrancy, and still very good barrel transparency. The gold filled trim is in equally good shape, and the imprint is strong. The filling mechanism holds up to 1.8 ml of ink.