Established in the Sydney suburb of St Marys as a branch of Wyn Products Pty Ltd, Wyn Toys were first registered as products in April 1940 and were advertised as sellable toys as early as May 1945. The company was started by Alec Tonkin (or T.A. Tonkin), an ex-serviceman who served in the AIF (Australian Imperial Force) during the years of World War II.

Following the end of the war, Tonkin did not return to his pre-war office job but instead began a new line in toy production, using machines bought from War Disposals. Many of the products were manufactured from materials previously used exclusively for the war effort: mostly pressed steel, but also tin plate, metal and wood. These toys were promoted as being authentic and workable, with the company reportedly responsible for creating parts for Volkswagen, Austin and Morris vehicles. Unlike other toy brands, such as Toy-Craft, Wyn-Toys primarily manufactured toy vehicles, including cars, trucks, wagons, trains and planes. Due to societal expectations of gender, this meant that their products were aimed almost exclusively at young boys.

Though it was one of the longest-lasting toy manufacturers set up in the immediate post-war years, Wyn Toys was officially taken over by Hill Industries in 1971. The Wyn-Toy branding was displayed on these Hill Industries products well into the late 1970s; however, this continuation was likely hindered in January 1980 when a batch of toy trucks and bulldozers were recalled due to toxic levels of cadmium found in the yellow paint. Thus, the Wyn-Toy trademark was eventually dropped entirely in 1982. 
 
References

Goldie, P (1980 January 3), 'Toys contain dangerous levels of cadmium', The Canberra Times, 3 January, pp. 1, viewed 24 August 2023, 03 Jan 1980 - Toys contain dangerous cadmium level - Trove (nla.gov.au)
Jones, L 2019, Australian Toys: A Collection, Melbourne Books, Melbourne 
(1950 August 29), 'The Steel Toymaker', The Daily Telegraph, 29 August, pp. 25, viewed 24 August 2023, 29 Aug 1950 - THE STEEL TOYMAKER - Trove (nla.gov.au)

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