The angular or oblong packaging with inner lining is typical of the period before 2006 and counts as an indicator of an original from this period. The small notch in the nib area is found on all Montblanc writing instruments from the mid-1990s and is also an authenticity feature. Information on concrete serial numbers is given only by Montblanc service directly; a photo with good resolution of the nib reverse, cap and case logo eases a remote-diagnostic assessment. Distortions on the case logo alone are no counterfeit indicator, provided workmanship and lettering remain clean.