For the Limited Anniversary Edition 1924 as well as many other high-priced Special Editions, Montblanc does not issue a separate certificate of authenticity; only the usual warranty card and the standard service guide are supplied. Some editions like Writers, Patron of Art or Asia editions do have special packaging and service guides, but a separate certificate is unusual. For household contents insurance, in the case of damage, a proof through purchase invoice and photo is usually sufficient; the precise requirements should be clarified with the insurer. Additionally, household-contents documentation on a CD at an external storage location is recommended.