I don't really know. Currently selling this for a friend and he can not remember the exact model. Here are some more pictures that may help with the questions that you may have. I hope this helps. Let me know if I can help you with some more info
Thanks
Charlie
Seekoutside Brooks pack used
-7,400 cubic inches
-Large hip belt
-Replacement hip belt and shoulder strap
-Load lifters not included
-$340 OBO
-Buyer pays to ship