I have bought Seiko BFS few weeks ago and as I do not like the original leather strap I decided to buy another leather strap and sell the original.
It is 125 X 85 mm without buckle ( strap will be sent with buckle)
Buckle 15 X 24 mm
width 24 mm tapering to 20 mm
thickness 4 mm tapering to 2 mm
I ask 40 USD including standart shipping via post.Thanks for looking