Mysterious 1988 Isle OD Man Bicentenary Of Australia Series.

There is a coin series "Bicentenary of Australia" issued by the Isle of Man and produced by the Pobjoy Mint. There is a mysterious thing about this series: different sources show different information about it.

For example - metals the coins were struck on: For sure there were versions: CuNi unc., CuNi Proof, Silver and Gold. Some catalogs add that there exist platinum and / or palladium versions of these coins, but when I asked the mint about them I got the answer that there is no trace in their archives that they ever existed.

Another thing: the number of coins in the series: The CuNi proofs are being sold in sets of four containing coins depicting: 1) a koala, 2) a kangaroo, 3) a platypus, 4) a parrot. But the silver sets contains two more coins with: 5) a dingo, 6) a Tassie devil.

So I'd like to ask the CCF members:
What coins of that series do you own (or at least: what of these coins have you seen personally)?
Of course - "seen" as a physical object not a catalog entry as various catalogs contains contradictory info about the series.

Below there's a table showing coins I'm absolutely sure that they really exist:

          CuNi unc.  CuNi proof  Ag   Au   Pd   Pt
Dingo                             X
Kangaroo      X          X        X    X
Koala         X          X        X    X
Parrot        X          X        X    X
Platypus      X          X        X    X
Tassie                            X