I've found 2 Rivas at V.C, it seems they are different sizes too
https://us.vestiairecollective.com/...leather-city-balenciaga-handbag-8057173.shtml
https://us.vestiairecollective.com/...leather-velo-balenciaga-handbag-7827387.shtml
https://us.vestiairecollective.com/...leather-city-balenciaga-handbag-8057173.shtml
https://us.vestiairecollective.com/...leather-velo-balenciaga-handbag-7827387.shtml