I think this place in the UK has rebranded Gyes saddles...
I ~think~ Gyes made at various times private label saddles for Cardiff, Dia Compe, Fenix, Fyxation, Lekker, Origin8, Papillionaire, Shinola, Sobdeall, Spa, Torelli, Velo Orange and Zimbale. Last I heard Gyes manufactured Rivet saddles to Rivet's proprietary designs. Those BLB saddles look like private label Gyes, too.