Vintage Montblanc No. 31, piston filler fountain pen, OB nib - 1960s Good condition! The pen shaft is in good condition! No engravings or scratches. The cap is also in good condition! The cap has also no deep scratches and no name engravings! The ring of the cap is as shiny as it has ever been. I believe the nib is a size OB or OM. The pen has been cleaned and is ready for writing! A great piece, perfect for your collection! The pictures speak for themselves!!! Please also take a look at my other offers for more writing utensils!