xiphophilos - Anything with a Cat# pre G21600 was definitely released on Regal. I'm not sure how high the numbering went before the labels merged, but I doubt it went higher than G21650.
@DJA1969: I've moved up the earlier labels.
@JCL135: I've added your nifty label guide to the label bio of Regal Zonophone (Australia).
Could you please check out the Regal Zonophone (Australia) listings? There are 4 records that are currently listed as released in 1932. Are these all represses that were originally released by the predecessor labels in 1932?
DJA1969 - Except for a short period post WWII, yes. Red & gold was used before red, green, white & black.
In total, there were 8 changes in label design from inception (in Aus) in 1933 to the end of the label in 1958.
The changes are as follows:
1. red, gold, white & bright green
2. red, gold, white & darker green
3. red & gold - company details: "Columbia Graphophone (Aust.) Ltd."
4. red & gold - company details: "Columbia Graphophone (Aust.) Pty. Ltd."
5. red & gold - patent details removed
6. red, green, white & black
*7. reverted back to red & gold (a brighter red was used), before reverting back to #6.
8. red, green, white & black - copyright statement