Gebiet 21 (Baden) had three Oberbanne in 1934:
Oberbann 1/21 Südbaden
HQ: Freiburg, Kaiserstraße 4
Commander: Bannführer Fred Tröller
Banne: 40, 113, 114 and 142
Oberbann 2/21 Mittelbaden
HQ: Karlsruhe, Karlstraße 94
Commander: Oberbannführer Otto Heidt
Banne: 109, 111, 169, 170 and 172.
Oberbann 3/21 Nordbaden
HQ: Heidelberg, Theaterstraße 10
Commander: Bannführer Ernst Bauer.
Banne: 110, 112, 171
An announcement was made by Reichsjugendführer Schirach at a leader conference in Traben-Trarbach (17th-18th April 1934) that the HJ Oberbann and BdM Gau were to be dissolved. Orders were subsequently issued on the 2nd of May and the 27th of October 1934 respectively. The Oberbanne were to be fully dissolved by the 1st of July 1934 and the Gaue by the 1st of Jan 1935. The ranks of HJ Oberbannführer and BdM-Gauführerin remained in use. The work previously carried out at the Oberbann and Gau was delegated up to the Gebiet and Obergau level.
I have the period documentation necessary to give you all of the information contained in your attachment for Gebiet 21 but it would be an awful lot of typing... I compared your scan to my source and I can see just by looking at Oberbann 1/13 that some of the leaders of the Oberbanne had been promoted between January 1934 (the date of publication of my source) and when your list was published. Your list will be from 1934 but do you have a month for it by any chance?