G'day Kye and all collectors.

Well, theatre slides of garden machines aren't exactly common are they?

These ones must date to the 1920s, but could (conceivably) have been used
up to 1930 - when Qualcast (Australia) was formed. But there are other clues ...

https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=75454

So, let's look at the clues.
[1] "All British lawnmower" and "Made for Australian conditions"

That copy could never be used after 1930.
Qualcast capitalised upon being 'Australian -made"

Before this, it is true that Qualcast UK did make a pushie claimed
to be suitable for our conditions.

After this, Qualcast 'pushies' were AUS made and advertised as such.

[2] The first Australian importers, promoters, and distributors of
Qualcast here was Gibbs Bros of Flinders Lane, Melbourne.
[Later, they would have Sydney offices as well].

After Qualcast Australia was formed, Gibbs Bros (not the Bee Gees) would
remain the AUS Qualcast distributor.

[3] A note on "ironmongers".
An ironmonger was a seller of ironware - early 'hardware' items.
'Hardware' was the North American equivalent to the British 'ironmonger'.

It is no surprise that Australia used 'ironmonger in the 19th and early 20th
centuries. But the reality is that the North Americans dominated the hardware
market here from about the 1890s. Ironmongers moved from being ironmonger
stores to become hardware stores!

The use of 'ironmongers' in the slides helps date these to the 1920s.

[4] A note on 'Qualcast'
Qualcast, itself, dates to 1920. The first Qualcast mowers were made by
the Derwent Foundry of Derby. Qualcast was a product name!

https://www.gracesguide.co.uk/Qualcast

[5] "On the market at last".
Well, isn't that remarkable!!!

Qualcast, first made in 1920 was sold here from about 1923.
So, Kye's slides suggest these are early 1920 slides that introduce
the 'British Qualcast' to Australia!

How about that!
--------------------------------
Jack.

Afterthoughts:-
"Even a Child can use it".
This is an early instance of this advertising trick.
[Use children and women as examples of 'simplicity].

Many companies, including Victa, made this claim!

[2] This slide is colourised.
The colours had to withstand the high temperatures of projectors.
White was a good contrast to the 'green' world for presentation.
The image was probably sourced from British UK stock. Who knows?

[3] The mower model is more likely to be the 'Alpha Special'.
Later, it would become the Model K (best guess).