https://en.numista.com/catalogue/pieces104712.html
Red Kangaroo design -- this coin, needs 3 year lines:
1989 Proof -13,971 (7,725 in individual packaging + 6,246 in 5-coin sets) -- see https://www.perthmint.com/documents/1989_Perth_Mint_Numismatic_Coins_281112.pdf
Here is a link where you can see these proof coins are the same Red Kangaroo design: https://www.amazon.com/Australia-5-Coin-Nugget-Brilliant-Uncirculated/dp/B073V568XB
1990 Proof - 5374 (2,007 individual packaging + 2,248 in 5-coin sets + 1,119 in 3-coin sets) -- See https://www.perthmint.com/documents/1990_Perth_Mint_Numismatic_Coins_281112.pdf
1990 MS-BU (bullion) - 200,000 (correct as is)
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Nugget design, different coin:
1989 MS-BU (bullion) - 122,342 -- see http://www.perthmint.com/documents/Mintages/mintages2/The%20Australian%20Nugget%20%20Kangaroo%20Gold%20Bullion%20Coin%20Series%201987-2018.pdf
See it here: https://www.worthpoint.com/worthopedia/1989-australian-nugget-little-hero-10-1666188266