It is a very rare, absolutely genuine Montblanc Double Zero Baby Safety with a long cap from the period about 1920 to 1924. A counterfeit can be excluded, since counterfeiters generally do not bear the effort of an original gold nib and use glass nibs instead. Complete model lists of Montblanc do not exist, which is why rare early pieces are hardly to be found in the literature. In restored condition with the star shining again, the model reaches a considerable collector value.