Austraila's Round 50 cent coins

[trout]

Every time I open a new 50c issue I always hope for another double bar as on the 50.50 Proof coin
This is a rather nice coin and I think it may become a bit scarce because of the hefty $100 + $10 postage price tag, After all this is just a coin out of the Silver Proof set that has been Gold plated.
No extra tooling would have been needed , RAM would have just pumped out the extra coins when they produced the Fine Silver set.