Despite the available letter, most likely no original is present. The letter from Montblanc is linguistically cautiously formulated ("writing-instrument type that we have made") and does not rule out that the concrete piece does not come from Montblanc. The overlay shows rather English production features; the clip could point to Pforzheim or an English manufacturer like Swan. Also the lever does not fit in this form to Montblanc production and would originally have been gilded. Additionally, the typical Montblanc star in the characteristic form is missing. Caution when buying such pieces is advised despite the accompanying letter.