The coins come in a heavy! Box with an outer cardboard box. This is an official release from the Perth Mint which was made exclusively for a German authorized distributor of the Perth Mint. Only 1,000 of these sets were issued and quite a few were broken up to sell the coins individually. Hence, there are fewer than 1,000 remaining.
Please consult your local authorities to find out what they are. The item "Australia Lunar Year Collection 12 2 oz Silver Proof Coins Tiger Dragon Ox Mouse" is in sale since Sunday, June 9, 2019. This item is in the category "Coins & Paper Money\Coins\ World\Australia & Oceania\Australia\Commemorative". The seller is "omxfl" and is located in Indianapolis, Indiana. This item can be shipped worldwide.