Kiddicraft exported products from the UK to Australia. At some point in the 1950's they licenced the tooling to an Australian manufacturer to produce the product domestically. I have been unable to find out who and when - if you know then get in touch!
K280 Interlocking Building Cubes
A box of 12 Interlocking Building Cubes, Made in Australia (By whom?).
Box features the Eileen Soper artwork.
Post Patent which was granted on 25th November 1940