Looks like a Queensland registration and very neat example but otherwise I don't know anything more than what is in the picture.
View the embedded image gallery online at:
https://www.moke.com.au/mokes/californian-exports/688-californian-export-in-gold#sigProIda41eda6ac4
https://www.moke.com.au/mokes/californian-exports/688-californian-export-in-gold#sigProIda41eda6ac4