A nib change is basically only possible directly at Montblanc; independent workshops do not come into question. With the Marcel Proust, however, the exchange counts according to the boutique's information as not feasible, since no replacement nibs are kept in stock. In 2002, writing instruments with high limitation numbers and F nib turned up again, but only in this one nib strength. A cost-effective alternative would be to find someone willing to undertake a private nib exchange.