Panachord was the label issued by the British branch of the Warner-Brunswick Company in 1931. In the USA, the corresponding label was Melotone. The British company was taken over by Decca, and Panachord was discontinued in November 1939. 

The label shown iss Austraalian, and was made by Brunswick (Australia) Ltd. The label overseas specialised in huillbilly, country and western music and is most soight after by devotees of such ‘music'. The Australian counterpart seems also to have adopted this genre of music. Panachord also listed some fine jazz, under pseudonyms as is often the case: Jack Wynn and his Dallas Dandies could be the Original Memphis Five, and Earl Jacksons's Musical Champions was the Chick Webb band. There were also dance bands featured, both on the USA and British labels. 

Miller [M] lists Panachord, pressed by Brunswick (Australia) Ltd, as having a catalog range from 12096 from June 1931, to the last 12206 in November 1931. 
Record in collection:

L136 c3 PANACHORD Made by Brunswick (Australia) Ltd.
P12106-A.  ELEVEN MORE MONTHS AND TEN MORE DAYS - PART 1 (Fields, Hall)
Colt Brothers. Accompanied by Rex Cole Mountaineers. Vocal duet with orchestra.
P12106-B.  ELEVEN MORE MONTHS AND TEN MORE DAYS - PART 1 (Fields, Hall)  Ibid.

This record was, according to Rust [R], a nationwide hit (in the USA?).