Chesterfield is a now discontinued line of inks. It belongs to xFountainpens and that company is now no longer in operation. That being said Antique Copper is a good shading brown ink. It’s a bright ink, not quite corporate enough to fly under the radar. It goes from an almost orange-brown to a strong reddish-brown. The warm tones of Chesterfield Antique Copper gives me a nice homely feeling.