Got some feedback,..
Back in the 50`s,..only the very famous drummers experimented with the double bass concept,...the BD hoops were ordered in natural and black finnish, tough to tell if they both came together or one was added later. The script badges were short time and then went to red painted !! The snare is most likely 13".
Either way they are very hard to come by. My guess is the original owner bought the second BD later and was famous. But that`s only a guess !!
The other early seventies kit is bottom of the barrell starter kit made in Taiwan, prolly with plastic lugs and one of five different sets they offered. It`s something you give away and not sell. I don`t think the BD mount pole is Sonor and the FT is 60`s tear drop !!