Wocord. Manufactured by World Record (Australia) Pty Lyd, of Brighton, Melbourne. The Austral Duplex record was regarded as unbreakable, it being very thick with a base made of wood, with a thin veneer of vinyl on each side. I understand this was as a result of material shortages during the Second World War. It was an 8-inch record, with catalog numbers 1 to 68, released in 1925. 

Listed by Miller [M]. Not listed in Miller [J] hence does not appear to have included any Australian jazz. 

Records in collection:

U8-01 sc3 THE AUSTRAL DUPLEX RECORD - WOCORD
Manufactured by World Record (Australia) Pty Ltd. Brighton, Vic, Australia
D14-11.  I WANT TO BE HAPPY.  Selection from ‘No No Nanette'.  Ralton's Havana Band.
D21-26.  SOB SISTER SADIE.  Ibid.
[[8-inch record of wood as per above description].

U8-02 c3 THE AUSTRAL DUPLEX RECORD - WOCORD
Manufactured by World Record (Australia) Pty Ltd. Brighton, Vic, Australia
D86-51.  GARDEN OF TOMORROW.  Ray Tellier's San Francisco Orchestra.
D88-52.  PETER PAN I LOVE YOU. Ibid.
[[8-inch record, of wood as per above description].