Looking at the leather, it looks like the seasonal goatskin one and not the classic caviar. You can ask your SA to be sure. Sometimes the photos can be tricky, especially for the black.
The seasonal one is more heavy. I had the seasonal goatskin in black but it felt too heavy and I preferred the caviar, so I purchased the classic caviar black. The leather is also different. The goatskin is more thicker and matte. The classic caviar is more shiny, just like the usually caviar, almost like a coat of shiny wax. It's preference on what you like.
Cerf tote is a beautiful bag. I didn't see the long strap, but it comes with a detachable long strap. I am sure you got it, but just FYI to be sure.
There is a cerf tote thread that you can view.
I hope that helps.
Congratulations on your bag!