No, not Keith Mahy, nor Tony Kuepfer (who had just arrived in NZ), Mel Simpson, who hadn't returned from the US or Peter Viesnik who hadn't started. Reg Kempton had been blowing for some years (in the South Island), but this is much too sophisticated for his work. I'm afraid it doesn't ring any bells at all. There were the 'industrial' blowers at Crown Crystal in Christchurch (where Keith Mahy was chief designer), the Philips factory in Naenae and Hokitika Glass (ex Christchurch). But this doesn't look like any of their work that I have seen either. I'm afraid I remain sceptical.