For those comic enthusiasts, the new Iron Man round just became available for pre-order with shipping in 2 weeks. I believe this is the 4th in the series (Spiderman, Thor, Black Panther) and looks just as great as the predecessors. The coins are being produced by Perth mint and are legal tender of Polynesian island nation Tuvalu. Tuvalu has started to develop a strong reputation by being the sovereign government responsible for these exciting superhero coins.
I really like the look of these coins, however I'm not a fan of having the queen on the back. But I guess this is because they are considered legal tender.
BullionExchanges has then available now for pre-order.
Sources:
http://blog.perthmint.com.au/2014/10/03/tuvalu-and-the-perth-mint-world-coins-from-an-island-nation/
https://bullionexchanges.com/blog/2018/04/23/ironman-new-tuvalu-ironman-silver-coin/