In her book ‘ About Buttons. A Collector’s Guide, 150 AD to the Present’ Peggy Ann Osbourne shares a couple of images of Disney themed buttons. One I knew about (the Coronet Buttons shared on the Coronet page), the other was new to me. It was a picture of Mickey and Minnie Mouse themed buttons made in Australia in the late 1930s. I searched, but could not find any reference to them so I can’t verify it. I did note that Australian made Minnie and Mickey brooches were sold in 1930.
She reports the Coronet buttons ( Donald, Chip, Goofy and Bambi) as being made in the early 1940s. I think they were actually produced from 1948-1953 as that’s when they were advertised. Advertising reported 4 styles in multiple colours. I think that the metallic Mickey button dates later (mid 1950s) for sale at Disneyland.
Both Carol and Cam have informed me that the uniform button with a lamp was for the Royal Australian Army Nursing Crops. (So if you rub it a nurse rather than a genie appears). The lamp came from the Greco-Roman tradition, symbolising learning.