Another photo illustrating the different look.

Pre Y2K Kelly on the left, post Y2K Kelly on the right. 

Kelly with double loops

Kelly's made after 2000 usually come with double loops. 

Here is an image of a 32 Nior Sellier in Box made after 2000. 

Below is an image of a pre 2000 Kelly, slung on shoulder. 

Hermes still produces Box Calf leather bags. For the curious, Hermes can change your Kelly from a single loop to a double loop for a pretty fee.