(SOLD) This is a 1949 full-size Parker 51 Aerometric fountain pen in Teal Blue, with a gold-filled cap, and a 14k gold Broad nib. The pen has been restored, which included a complete disassembly, a gentle 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 am often asked to recommend a vintage pen for a new fountain pen enthusiast. Say, you've tried a Lamy Safari, a TWSBI Vac700, perhaps even a Pilot Custom 74, and you've swallowed the bug. There are a few vintage models that can be excellent "first vintage" pens, but the Parker 51 Aerometric is probably the safest bet. No, it is not made of a colorful, intricately patterned, modern acrylic, but it's everything else you want in a fountain pen.
Let's start with the nib. Most Parker 51s came with a Fine nib. This particular nib, however, is a Broad, a truly rare model! It lays down a juicy line of about 0.7 mm (on my paper), with a slight stub-like quality. It's dependable and brimming with self-confidence. A firm nib, but feeling soft on paper, thanks to its excellent shock-absorbing properties. It's a perfect nib for a beginner due to its forgiving nature. Yes, it will let you get away with all kinds of quirks of your grip, angle, rotation, and writing pressure. A nib that's ready to write, whenever you command it to. And, it looks as good as new, with ample tipping material, of perfect geometry.
The pen has superb ergonomics thanks to the long, streamlined shape, with a comfortable, step-less section, and excellent balance, posted or not. The filling mechanism has just been completely overhauled and will last for decades without having to be serviced. It's easy to use, efficient, and holds a lot of ink. Finally, the appearance. Again, unless you must have a super colorful bespoke acrylic pen, the 51 is a handsome beast. It's somewhat toned-down, classy appearance makes it a great office writer. It will look stylish, but without drawing unwanted attention. The little bit of gold-filled "bling" is actually very tastefully done and adds quite a bit of character to the pen.
The pen is in fantastic condition, without any flaws or defects. One interesting bit about the barrel is that the date imprint is missing. It was uncommon but some P51s did come without a date imprint. It's just an interesting detail, and I thought I'd mention it.