The easiest way to identify the authenticity of a Montblanc pen is to see if there is a number on the pen clip of the pen cap. Every Montblanc pen has its own unique number. It's very small, so small that even with bad eyesight, you can't count the numbers, but it's absolutely clear. Usually there is a pen case. If not, just check to see if it has a number. If it still doesn't work, go to the Montblanc counter and ask. I believe they are not wrong. Come to think of it, there is another thing. Montblanc's ink is also very special. I use a fine line pen. The writing is no different from ordinary ink pens at first. After it dries, you can see that it is actually green.

Also:

1. The logo of the authentic pen is clear, but the A product is blurry;

2. The metal accessories of the authentic pen are exquisite and shiny, while the A product is rougher. Hope These methods for identifying the authenticity of Montblanc pens are useful to everyone.