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.

Coins and Canada - 50 cents 1988 - Proof, Proof-like, Specimen, Brilliant uncirculated

Rare 50c coin from 1988 minted to celebrate bicentenary worth $15,000

Rare coins: An extremely rare 50c coin worth $15,000 is circulating in Australia

$5 1988 Parliament House Al-Bronze Proof – M.R.Roberts - Wynyard Coin Centre

A 5c coin could be worth $2000 to $5000 due to a Royal Australian Mint manufacturing error

1996 Australian Mint Coin Set - Celebrating 'Sir Henry Parkes' - Prestige Coins

1970 Captain Cook 50 Cent - The Australian Coin Collecting Blog

$2 1988 Silver Proof - Wynyard Coin Centre – M.R.Roberts - Wynyard Coin Centre

1988 50c First Fleet Bicentenary Coin Pack - Aussie Coins and Notes

Rare coins: An extremely rare 50c coin worth $15,000 is circulating in Australia

Australia 1988 bicentenary 50 cent coin