From the Maitland Mercury report:
There are only about 15 operational WW11 amphibious jeeps in Australia and this weekend at Clarence Town you will have the chance to see at least six of them.
The second annual Swim-in and Rally will be held at Clarence Town with a grand parade of vehicles at 9.15am Saturday.
Most of the vehicles taking part in the event were made during WWII with a handful from the Vietnam era. “Seventy-five years on and they are still going strong,” said one of the event organisers Craig Olsen.
Full article available at Maitland Mercury, October 31 2017.