Laban writing instruments are unquestionably guaranteed against mechanical failures due to fauly materials or workmanship. Should any imperfection in workmanship or material appear for 3 years after the date of purchase, Laban will repair or replace, at its discretion, the parts of items free of charge when returned to any of the Laban authorized agents or dealers in the world. Defects and damage caused by accidents, improper usage or maintenance, unreasonable or inconsistent with Laban’s instruction are not covered by this guarantee. Lead, erasers, and ink refills, exhausted in the course of normal use, are excluded from our warranty. Do not let your sterling silver and silver-plated pens come in contact with any chemicals or moisture. If tarnishing occurs, use the sliver polishing cloth to polish the pens.