Early Keith Mahy Glass Bottle

When I first saw this I thought it might be TKs work but on opening the package realised it could be Keith Mahy, a very early NZ glass artist now no longer with us. After showing it to 3 knowledgeable people including Tony everyone said that yes it is Keith's early work before the Burning Issues studio. It's a medium size for a bottle 310mm high with an interesting pattern on the bottom half, it almost looks like fish scales the top half is smooth. Colours are deep purple and dark blue.
Thanks Tony, Stuart and Rick for your help identifying it!