Known are, among others, yellow-orange, blood-orange, red, purple, turquoise, light green, green, dark green, olive, brown and black. According to references from former Montblanc employees, a wine-red variant additionally exists. About the existence of further blue tones such as light, medium or dark blue, there are no confirmed sightings, so the collecting series overall apparently comprises significantly more than ten colours. The writing instruments from the 1970s are regarded among collectors as underestimated.