This is a Montblanc Generation Red GT Ballpoint Pen. 

Its authenticity is 100% guaranteed. 

It has a twist mechanism, works well. It uses 0.7 mm leads.

It has scratches overall. It has some minor cracks near the top (picture 3).
 
The internal mechanism has some minor cracks (picture 4). It works well.

* FREE SHIPPING WORLDWIDE with a tracking number.

* I list pens, please visit my eBay store.