Fountain Pens with Nib Size: SF

Semi-flex nibs usually go for a premium these days, but you can get a nice one here if you don't mind a small pen. Our chased black hard rubber Conklin 25P actually looks close to mint condition. Crisp imprints and chasing. No cracks. A piece of the crescent lock is missing, but the lock still works. Click the headline for close-ups. You will write a nice line from fine to about 1mm wide with its 14k gold semi-flex nib. There's a little feedback, but it won't prevent you from making the most of the writing experience. 11.1cm capped.

Parker Duofolds were the most popular pens of the 1920s, but not everyone could afford one. The Parker Lucky Curve was a more affordable option. It is the thinner, less flashy version. We don't know if this is its original box, but it is a great vintage box with instructions. We restored the vintage pen with a new ink sac. The main part of the cap and barrel are black permanite, and the section and end caps are black hard rubber. Click the headline for close-ups. You will write a nice fine line with its 14k gold nib that also flexes just a little. Light wear on the cap and barrel. Looks pretty sharp. 13.4cm capped.

Esterbrook is most famous for it, but Wahl-Eversharp was the first that we know who made nib assemblies that screw in and out of its fountain pens. Click the headline on this Wahl-Eversharp Gold Seal to see the word "Flexible" written on the nib. This was just one of a series of nibs that could be screwed in or out to better suit the needs of its writer. We don't find this 14k gold nib to be super flexible. It seems more like a semi-flex these days. You will write a nice fine to roughly 1mm line. We restored this vintage pen with a new ink sac. Its woodgrain hard-rubber cap and barrel sport some wear and hazing. There is a little brassing on the lever, too. 12.1cm capped.

We don't know the model name for this black-hard rubber Wahl pen, but it is a very nice example of the company's 1920s manufacturing. The pattern is still crisp and there is minimal brassing. We couldn't get it open, but it does still have a working ink sac inside it. There is a little chocolate hazing overall with some larger spots of it on the cap. You will write a dry, extra-fine line with a little feedback...but the 18k gold nib also flexes just a little to give you about a half millimeter of line variation. Long and slender. 13cm capped.

We don't get many Onoto de la Rue pens on this site. This old black hard rubber pen is a bit of a mystery. We think this vintage pen has an early version of the plunger vacuum filler...similar to what Sheaffer began using in its Vac-fil technology. Our pen is unrestored and not working to fill the pen. No cracks nor deep scratches. Lots of wear from use. The pin strips on the cap and barrel are mostly gone. The two decorative bands on this pen are solid 18k gold. We dipped the 14k gold nib and found it just barely counts as a semi-flex nib working from extra fine to about broad. Don't smush the slip cap on too hard because you will break the slightly too long nib. Click the headline for close-ups. 14.5cm capped.

Our Palmer Method Woodgrain pen was undoubtedly sold by or for the school of handwriting also known as the Palmer Method. We have not previously seen a Palmer Method pen that didn't have some other branding on it. We strongly suspect that this pen was made by the Wahl-Eversharp company, but there are no markings to verify that beyond the shadow of a doubt. It just has similar design touches. We restored this vintage pen with a new ink sac. No cracks or deep scratches. There is brassing on the cap bands and lever. You will write a razor-sharp extra-fine line that can flex out to about 1mm. This 14k gold nib is on the stiff side for a semi-flex nib. Click the headline for close-ups. 13.3cm capped.

The 1920s were THE decade for amazing semi-flex nibs. This Swan Mabie Todd 142/1 fountain pen has a fantastic semi-flex nib made of 14k gold. Not a wet noodle, this vintage pen still writes a great extra-fine to 1mm wide line. No cracks or chips. However, the chocolate hazing is obvious, as is the wear on the chasing of the black hard rubber. It does not appear this pen ever had a pocket clip. Initials are engraved in the wide cap band. We restored the pen with a new ink sac. Click the headline for close-ups. 13.9cm capped.

Black ripples on orange hard rubber look fantastic on this Wahl-Eversharp Gold Seal fountain pen. Our vintage pen is fully restored with a new ink sac. We think people will be most interested in its semi-flex 14k gold nib. It has a couple of small dents, but it writes a nice fine line to 1mm wide. There's a little feedback, as many semi-flex nibs do. There is a tiny chip in the lip of the cap but no cracks. You will find some brassing on the trim. We aren't sure that is the original section. Be very careful putting the cap back on the pen. Sometimes you will engage the wrong threads and touch the nib to the cap, as the nib seems too long. Yet, there is one engagement point where the tip of the nib does not touch the cap. Pen measures 12cm capped.