Good day to you too CyberJack sir.
I vaguely recall seeing both billboards for Bex and Vincent's powders at the same railway station!
Norman Gunston always had one on hand for his guests, don't forget.
I just read in the YouTube comments section that the Bex factory was in Crown St, Surry Hills in Sydney.
One cheeky comment even spelled out what I alluded to earlier!

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!