I'm very happy with the black epsom leather strap I ordered from Delugs. In particular, I love how thin it is, and I like its taper from 20mm to 16mm, which is uncommon. Works particularly well with a fliegeruhr or diver style watch IMO.
Black Epsom Slim Strap
Bought the smooth rally together. Both are perfect for my zenith revival A384.
Great quality, fast shipping, perfect fit! Would highly recommend!