The Diva Line is a Montblanc range dedicated to famous film actresses. It includes the Greta Garbo and Marlene Dietrich models as well as the Ingrid Bergman introduced in 2009, which was supplied with red gold-plated fittings. The line is emphatically slim and decorative in design and was offered as a fountain pen and as a ballpoint; in practice many owners reach for the ballpoint by preference, because it is less trouble in daily use.
Anyone meaning to write with these pens should handle one first. By design, the thread between section and barrel sits very low down, so that the fingers almost inevitably come to rest on it while writing. Over short notes it hardly matters; over longer texts it is felt as a nuisance. The point was already raised as a criticism of the Greta Garbo and was left unchanged on the Ingrid Bergman. It makes no difference to the collector value, but it does explain why fountain pens from this line so often reach the second-hand market in almost unused condition.