Both writing instruments are genuine; counterfeits of these simple models are not known, since counterfeiters concentrate on Meisterstücks. The first fountain pen is the model CS from the 70s with gilded steel nib (then retail price 39.00 DM); the second is a Montblanc Turbo from the early 80s, sold as a school fountain pen for 19.50 DM. A blue cap top signalled at Montblanc in the 50s the presence of a carbon-copy nib that worked with high pressure on carbon paper and was correspondingly rigid and inflexibly designed.