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Good question. Going back through my record I bought them from Bullion List in 2015 for 77-92% above Spot. The same year I bought Perth Mint Lunar Rabbit from Ainslie Bullion for 127% above Spot. Also a bunch of Perth Mint Kookaburras (1992-2007) for 131% above Spot. If you can explain the difference between these products I'd love to hear it :)

That's a fair bit more than regular bullion, but they look cool, so probably worth it. The differences between those coins you listed? I've got no clue, brother. :)

Yes, a lot of those I bought when I was at first looking more at collecting older semi-numismatics for sets and cool looking silver coins. I am a bit more disciplined now :)