I have no clue if this is an actual Belstaff bag but it was expensive and even if it isn't the classic one—or even a Belstaff—it's aesthetically pretty perfect. I can always
women's bags
Belstaff Bags: Overpriced or Totally Fab? - PurseBlog
Belstaff Handbags Black Leather ref.269542 - Joli Closet
New. Belstaff Dorchester Satchel/Tote Bag. Waxed Cotton and leather. Dark Olive | eBay