The pieces described are predominantly not particularly valuable utility and school fountain pens, e.g. with the Monte Rosa a school fountain pen from the 1950s. Value surprises are therefore not to be expected. In Berlin, the collectors Fritz Diesbach and Ulrich Krüner are regarded as reputable contacts for evaluation and sales advice; contact is possible via the telephone book. A professional evaluation on the spot helps to achieve realistic prices and to market writing instruments correctly.