Already shortly after the introduction of the Bohème leather cases counterfeits appeared that are of inferior quality and clearly differ tactilely from the original. A first difference shows up on the leather itself: the original leather has a clear texture, while the counterfeit leather is smooth. The Montblanc star also deviates; on the counterfeit it appears rather jagged and is surrounded only by a thin metal ring, while the original carries the usual Montblanc star with a clearly broader metal ring. When opened, poorly executed seams can be seen inside the counterfeit. The inside logo is also poorly defined on the counterfeit; the star is hardly recognisable as such there.
Related pages on fountainpen.de:
• Montblanc Bohème — model overview: https://www.fountainpen.de/boheme-en.htm