This is the Montblanc Meisterstuck 1924 Limited Edition Solitaire 163 rollerball. These pens were released 25 years ago to celebrate the 75th anniversary of the Meisterstuck. The Solitiare 163 rollerballs are absolutely beautiful with their cap and barrel in a barley AG925 silver, with rose gold plating on the trim. They have a diamond in the cap-top as well as a beautiful mother of pearl snowcap. There were only 1924 of these released and this is number 0678. This example is in excellent used condition. There is a tiny blemish on the surface just at the pens nib (that I've tried to show in the close up photo) but otherwise I think it could fairly be described as mint condition. There are no nicks or dings on the beautiful surface of the barrel or cap. It comes in its original box with warranty guide, matching box sticker with 'No.0678' indicating the release number. The plastic covering is still on the symbol on the box.