The third medal is part of an extensive series of coin-like medals made privately in China. This particular medal commemorates one of the "Eighteen Arhats", the original disciples of Buddha according to Chinese Buddhism. You can, of course, buy medals depicting each of the 18. I believe this one is Arhat number 8, Vijraputra the "Laughing Lion Arhat", who is usually depicted playing with a lion cub.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis