Montblanc Starwalker Fineliner from Mr. Porter. Authentic?

[btinl]

I purchased this Starwalker from mrporter.com which is listed as an authorized dealer on the Montblanc website. My warranty card was not stamped on arrival. I am new to Montblanc, so I want to make sure that my pen is authentic.

Here are some pics. The serial number looks to be appropriately placed. Under the clip is written "Made in Germany" which seems consistent with what I have read.