The Montblanc Safety Pen No. 15 is classically filled with a pipette from above; alternatively, filling can be done by carefully holding the nib of a piston pen into the opening of the safety pen and releasing ink from the piston pen into the safety pen. In the example described, the barrel shows several inscriptions: at the top in white the maiden name of a previous owner, below that the barely readable inscription 'Simplo Original Montblanc' with the mountain symbol in the middle. On the turning knob the designation '15 OB' is engraved. The cap bears the lettering 'Montblanc' with mountain symbol and the poorly readable dealer detail 'Füllhalter-Spezial-Geschäft Königsberg Pr. Junkerstr. 11'. The nib is a 14-carat gold nib of width M with the Montblanc circle imprint. The pen is tight and writes flawlessly after filling.