Current manufacturers of tensioned-leather bicycle saddles:
Berthoud - France
Brooks - UK
Gyes (Cardiff, Dia Compe, Fenix, Fyxation, Lekker, Origin8, Papillionaire, Shinola, Sobdeall, Spa, Torelli, Velo Orange, Zimbale, etc.) - Taiwan
Ideale - France
Lepper - Netherlands
Nasiruddin (Persons) - India
Rivet - AFAIK manufactured in Taiwan by Gyes but to their own proprietary designs
Sella Italia - Italy
Selle Anatomica - USA
Selle Monte Grappa - Italy
Tabor - Portugal


Rumor had it Lepper quit manufacturing leather saddles ("Again" - Forest Gump), but, and it's a big but, I still see plenty of 'em offered retail. Shrug.