Le 100 Super Selectomatic (Br HZ3-B3)

Lemair Helvetia 100 Super Selectomatic
"This is advertised in the 1960 model lineup as the 'Super Selectomatic' but close examination of the newspaper graphic shows that is different from the model listed by the same name in their 1964 lineup. Photographs of an example online (see below) show that this is the Brother Model 100 HZ3-B3"

1960
Feb 14 - Advert, Sydney Morning Herald, p35

Jul 17 - Advert, Sydney Morning Herald, p33 Aug 28 - Advert, Sydney Morning Herald, p25  (see right) Larger graphic than the previous two adverts and more info in the text... "This fully automatic Zig-Zag machine has EVERYTHING ... Beauty, simplicity, performance, matchless value. NO CAMS TO INSERT. NO COMPLICATED PARTS TO WORK. JUST TURN THE DIAL FOR THE FANCY STITCH YOU LIKE. Buttonholes with professional finish, over-locking, blind-hemming, plus hundreds of satin stitch patterns ... automatically."

1962
Jan 21 - Sydney Morning Herald, p15 - When you look closely at the graphic in this newspaper ad, you can see from the absence of the Stitch Selector Knob and the replacement of the Stitch Regulator with a reverse button, that the model described as the "Super Selectomatic" is now the Brother Model 210. This continued through to at least 1964.

Examples
Gumtree for sale notice of machine at Thornton, Maitland. The most interesting photo from this advert was the shot of the name on the machine. This positively identifies this machine as the Brother HZ3-B3

Brother Model 100 HZ3-B3
There are a number of posts and articles online about this Brother model...

The Herd Is Growing Again! Extensive article with a pdf of the manual plus Brother Select-o-matic Update and FAQs both by Jen on Stitchified.

Brother Select-O-Matic Youtube video