Not as polished-looking as the Rivet Pearl above, but I've had good luck with the
Gyes GS-06H Brown Leather Racing Bicycle Bike Saddle, comes with and without the cutout (and with copper rails/rivets if that's your thing). Mine has good setback (more than enough when compbined with my Velo Orange seatpost).
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"