Robert...
The white MC-6100 above was sold as the Eureka Emperor, and also the Montgomery Ward Signature brand. I was told you don't see many of them around because of motor issues and weren't manufactured too long. I'm fortunate to have the Emperor in working condition that matches my first edition straight suction Empress. I don't know if the Emperor was manufactured by Eureka in Bloomington using the Panasonic motors, or if just a rebadge direct from Panasonic. I believe the latter, but that must've been the only Eureka/Panasonic connection that I'm aware of. Maybe someone else can enlighten us.