The serial number of the Bohème is, where present, on the clip ring slightly offset to the right. The first Bohèmes (with only one ring on the grip section and engraving Rouge et Noir) as well as some of the early three-ring models do not yet have a clip-ring number; they are nevertheless original and partly sought-after collector pieces. On the underside of the clip the embossing Pix or Meta Pix can be recognised, analogously to the Meisterstücks. The gemstones in resin Bohème models are synthetic (even when Montblanc speaks of gemstone); real rubies, e.g. heart-shaped, occur only on individual precious-metal Bohèmes like the Je-t'aime. Retracting the nib serves practically for compactness when at rest and protects the nib in transport; a special protective function against ink on the fingers as on Safetys, however, this is not.