Finding the serial number on your Rimowa suitcase is essential for registering your lifetime warranty or checking authenticity, and the location depends on the model's age. On most modern Rimowa models (manufactured after 2016), the serial number is engraved on the outside of the frame, typically located very close to the center hinge on the long side of the suitcase. It is a 13-to-17-digit code that is etched directly into the aluminum or polycarbonate. For older, vintage "Topas" or "Classic" models, you might need to look on the underside of the suitcase near the wheels or occasionally on the metal plate where the handle attaches. On the newest "smart" models in 2026, the serial number is also embedded in an NFC chip behind the Rimowa logo; you can simply tap your smartphone to the logo with the Rimowa app open to instantly pull up your digital serial number and registration details. If the exterior engraving is scratched or unreadable, check the original warranty booklet or the receipt from the authorized retailer, as the unique number is always recorded at the time of purchase.