With respect Gents, look a little closer.
The A-E is the early frame w the early barrel, diff seat, no sidecovers (just # plates), diff brake - quite a lot diff from the Alron pictured.
Of course the later Sprite is the same as the 400 Alron - identical except for the badge on the tank, but the one above aint.
However, imho they're handsome beasts (either model) for the era, except as Mark says, for the seats. They look almost suitable for a pillion passenger!
I love all this stuff about the Alron, their history is very interesting. I remember them when i was a kid and they were advertised as the only Australian made dirt bike on the market.
I'm pretty sure i even have a Two Wheels mag test on one somewhere.
Keep up the good work boys and girls.
Johnny, I think you'll find the test is in an old Cycle Australia mag if its the test of the 400. I think it was Brian Clarkson's bike