With Limited Editions, the warranty slip should as far as possible not be stamped; the receipt suffices for warranty claims. A 'virgin', i.e. unfilled warranty slip clearly increases the resale value, since the warranty period on a later service first begins with the date of putting into use entered then. Reputable dealers stamp only on express customer wish. Montblanc keeps in the year of issue all nib widths from EF to OBBB in stock and offers within the framework of the special nib-exchange warranty an exchange; the time limit to the edition year named in the accompanying booklets for editions like Kafka or Jules Verne, however, narrows this possibility more than the normal warranty. Spare parts of older Limited Editions are indeed largely kept in stock, but always only incompletely, so that from individual parts whole devices cannot be assembled; an exchange is exclusively possible via Montblanc service in Hamburg.