Caran d'Ache Ecridor Chevron Palladium Coated Fountain PenTimeless. The Ecridor Chevron houses an inverted v shape design on the six sides of its palladium coated body. These chevrons are diamond engraved and elegantly match its palladium coated finish. Fountain pen nib available in three different widths. Piston ink pump or Caran d'Ache ink cartridge. The Ecridor Chevron fountain pen perfectly satisfies your needs for writing comfort.