For your consideration, we are offering for sale this Mint Condition Stickered Circa 1925 Chilton Boston Black Hard Rubber Pneumatic Fountain Pen. This fountain pen has been thoroughly taken apart, cleaned and put back together and now is in wonderful writing condition.

I have ultrasonically cleaned the NIB, feed, and section. Replaced the old rubber sac with a new, properly sized Silicone sac. Hand polished the Chilton Gold Filled Clip, Cap Banding, and 14K Chilton Boston Nib. This Chilton is in Mint Condition with crisp chasing and imprints. The cap retains the original Instructional Sticker making this a very scarce collector fountain pen. This Chilton Pneumatic Fountain Pen measures 5" capped and 6 7/8" posted.

This fountain pen cap and barrel are in magnificent condition with no chips, cracks or repairs with the cap always securing tightly to the barrel. The cap has Chilton Gold Filled Clip and displays no brassing to the clip. The Cap Banding displays no brassing and has a rich gold filled color. The barrel is clearly stamped with, "Chilton Pen Boston, Mass U.S.A. Pat. March 13, 1925". The black hard rubber coloring on this pen is fabulous, it displays a deep black color with the red end caps.

The filling unit on this Chilton is known as a Pneumatic filler. To refill the pen, you have to slide the barrel upwards, put your finger over the little hole that is at the end of the barrel, pull it downwards again, put the nib inside the ink pot and release the pressure of the finger, creating a vacuum which allows ink to go up through the nib and into the sac. I have greased the filling unit, so it operates more smoothly. There is excellent suction on the seals - it fills as it was intended to.

The Chilton Boston NIB is 14K gold and the actual tipping material has a medium point measuring roughly .84mm when measured with digital calipers. When writing a sample with this semi-flexible NIB, it writes with a fine (f) to a double broad (bb) stroke/line. In the writing sample provided in the listing, the fine line measures at .54mm and the double broad line measures at 1.72mm under medium to firm pressure when measured with digital calipers. The writing sample was done with the actual pen in the images by dipping the NIB in Parker Quink Blue-Black Ink.

Any specks of white in the images are from the cotton that I used to clean the barrel and cap.

This Chilton is a rare example with the original sticker, rich black hard rubber color with a clear imprint and crisp chasing. This type of condition commands the listing price in my humble opinion and will consider fair offers. These types of Chilton's are hard to find in this type of condition which, I would grade in Near Mint to Mint Condition. Certainly, a worthy writing instrument to add to one's writing arsenal collection and ready for use if indeed one intends to do so.
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