Advert-19710103-SMH,p88

Lemair Sewing Machine Advert - Jan 03, 1971 - Sydney Morning Herald, p88
Lemair sewing machine advertisement for Farmer's department store from the Sydney Morning Herald, the machines advertised are listed as the...

Lemair Helvetia Automatic Zig-Zag
"The machine in the photograph looks similar to the Le 803 Boutique except for the 'nose' which has three elongated slots instead of holes and the thread tension dial is in the wrong place. It is almost exactly the same as this closed Gumtree advert described as a 1971 Lemair New Yorker.."

Lemair Helvetia Fully Automatic
"The fact that this uses cams and the distinctive lever at the top makes this look like this closed Facebook sale which is labelled as a 'Zig Zag' machine."

Lemair Helvetia Embroidamagic
"From the photos in the Mar 14 advert and the manual in my possession this would appear to be based on the Brother 181 Project"

Source
Reference found from search on the Sydney Morning Herald records in Newspapers.com

Graphic is detail of free online access to this issue on Google News