Rare 50c coin from 1988 minted to celebrate bicentenary worth

All 50c coins minted that year were supposed to display a First Fleet ship and the dates 1788-1988 to acknowledge the bicentenary. But an unknown number of those were wrongly minted.

Winter Coins

Peter Vincent: All their latest coverage - Page 2

Australia 1988 bicentenary 50 cent coin

Australian 50 Cent Coins

1988 AUSTRALIAN 50 Cent Coin - 200th Anniversary First Fleet $6.00 - PicClick AU

Australian Mint Coins: A Treasury of Numismatic Excellence

50 Cents - Elizabeth II (3rd Portrait - First Fleet Bicentenary) - Australia – Numista

One Of The Rarest': 50c Coin From 1988 Sells For $15,000

Check your change now: The 50c coin that could be worth $15,000 after Royal Australian Mint error

Are there any US coins minted after 1965 that are worth collecting? I am referring to circulating coinage, not bullion or commemoratives. - Quora

1988 Uncirculated Bicentenary Fifty 50 Cent Coin - Tall Ships - Ex Ram Mint Roll

50 Cents - Elizabeth II (3rd Portrait - First Fleet Bicentenary) - Australia – Numista