I believe the gauges on the Black Beauties is 45-105 and the tension is medium. They are smoother than most rounds but not smooth as flats.
The Sadowsky B String is .130 and I found a second one. One is brand new and one is used and cut slightly. $7 for the new one $6 for the used. Both for $11.
Also found another set of Black Beauties which seem to be more intact. I will measure and price them as soon as I can.
Also found a partial set of LaBella Tapewounds ADG. The windings on the E came loose.
This set is barely used. $9 shipped?