The two ballpoint pens you are seeing are two of the first versions that started a modern, unique and surprising pen line - Montblanc StarWalker. At first glance, we can easily see that these two pen models do not have many differences, the pen shape is larger than the Meisterstuck line, the pen cap is plump and the Montblanc logo is transparent on the pen tip. The only difference is probably the two plating versions, for StarWalker Platinum Resin is bright white Platinum plating, while StarWalker Midnight is impressive with mysterious black-gray ruthenium.
Both are available in store in brand new condition.