UPDATE: Steve spotted this interesting post that shows a hoard of envelopes sent by customers and dealers to Olympic that was found. It’s kind of cool.
“There were over 100 covers here, and I have scanned a number of them above to share with members. A few were pre-war 1930s.
There are amazing array of origin country, commercial covers from the 1940s mainly. They have never been near a stamp dealer for ~65-75 years.
Burma, Portuguese India, Iran, Iraq, Cyprus, Malta, Southern Rhodesia, Thailand, Malaysia, France, China, Netherlands indies, Sarawak, Uganda, Belgium, Portugal, Turkey, a real early Israel cover, Egypt, Trinidad, Fiji, South Africa, Argentina, Sudan (several!), Lebanon, Ceylon, Greece and
There is a 1949 India Gandhi commercially used – a $50-$100 cover in today’s market. Who would know – 1949 Gandhi stuff is white hot.
Includes Registered mail and Postage dues assessed etc. Pretty much all of them sent to Olympic Spark Plugs Pty Ltd in Melbourne.”
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This May 29, 1946, ad out of Australia in “The Bulletin” shows what I believe to be a depiction of two Chinese women driving a jeep.
View all the information on eBay
“Olympic Spark Plugs Large Full Page Original Advertisement removed from a 1946 Australian Newspaper and in good condition for age having some marks and creases and age yellowing and minor damage around the edges. PLEASE NOTE the minor damage around the edges. Size of the paper which the advertisement is on is 43 cms x 27 cms. It would look good framed on your wall or displayed with your Olympic Spark Plug Collection or if you collect Spark Plug Memorabilia. This advertisement would be hard to find in this size.”
Here’s a 1946 newspaper ad for this company.
https://trove.nla.gov.au/newspaper/article/17998206