Wow - that is some informative link Lunik - thank you for the update!!! Still digesting recent info that you had kindly sent to me.

In 2021 Golddalek added a note to the Timeline when he looked up Meccano Magazine for the robot’s construction details. Nothing found. Joe K. had already linked to this post. A direct link to construction plans was still missing. Added it now on the timeline. Some explanations for further retrieval here: A direct link to the oldest construction plan in „Meccano Instructions for Outfits Nos. 4 to 7“, May 1930, English Edition: https://www.meccanoindex.co.uk/Mmanuals/1928/Manuals/47-30-10-3'5.pdf If the link should stop working you may still retrieve meccanoindex.co.uk > manual search > (keyword) 1930 > scroll down and open: outfits 4 - 7 print code 2/1030/3.5(M)(Eng) > find model 6.3 „Robot (or Mechanical Man)“ on page 67 Other years, other outfits, other languages? Look for 1930 outfit 6 model 6.3 1931 - 35 outfit 6 model 6.5 1934 - 37 outfit K model K14 Model numbers relate to the outfit just big enough for the full model. Meccano did not have themed kits those years. Either get the right outfit or a mix of small kits plus loose (spare) parts. Respective instruction manuals have been provided with the outfits. Update information for existing customers was available by the „Book of New Models“. The robot has been introduced in the „New Models“ English edition February 1931. It has been that Book where Meccano added the visionary intro (100 years) to the technical part.

A direct link to the oldest construction plan in „Meccano Instructions for Outfits Nos. 4 to 7“, May 1930, English Edition: https://www.meccanoindex.co.uk/Mmanuals/1928/Manuals/47-30-10-3'5.pdf If the link should stop working you may still retrieve meccanoindex.co.uk > manual search > (keyword) 1930 > scroll down and open: outfits 4 - 7 print code 2/1030/3.5(M)(Eng) > find model 6.3 „Robot (or Mechanical Man)“ on page 67

They sound a little tinny.

My only example, a KSN Midori Tetsuwan Atom, thanks to Kirk. The urge to build it is almost irresistible.