Interestingly, even the surface of the leather looks a bit different...
That is a huge difference. Can you exchange it or a different one?
Wow! I had to check mine after reading your post. Here's mine; purchased Sep 2011.
View attachment 1889930
You can definitely tell the difference!
I had the same thing happen to me. I rushed to buy a DE speedy before the price increase. I got home to find the stamp was not done properly. It said LOUIS VUITTO and a very very lightly stamped N.
I returned it.
What?!?!! I think that's even worse than having the entire stamp being light. I am glad that you noticed it that soon!