Reported is a smooth service: within the framework of a service flat rate, cap, front part, feed, cap seal and tank were replaced, so the writing instrument came back practically near-new. A nib exchange or regrinding an OBB nib to narrower nib widths is generally not possible; a nib exchange costs about 150 euros. The model designations 144 (Classique) and 146 (Le Grand) are clearly to be separated; their nibs are not interchangeable. Since 144 and 146 are everyday writing instruments and no collector's pieces, an exchanged cap with 'Pix' hallmark is in the short term not value-reducing.