The fountain pen does not have a nib.

The Vintage Esterbrook J Copper "Root Beer" 1550 Bookkeeping Fountain Pen is a collectible writing instrument from the 1940s to 1950s. Made in the United States, this fountain pen features a threaded cap and is crafted from resin material. With a length of 5 inches and a diameter of 1/2 inch, this unique pen is perfect for any collector of vintage pens. The "Root Beer" color adds a nostalgic touch to this classic Esterbrook fountain pen, making it a standout piece in any collection.