Mysterious tiny fatman coins [解決]

Found these coins, seem to be Chinese, and one of them has the fatman obverse. Its around the size of a dime, the seller didn't know anything. Stall was insanely crowded, and my lackluster phone camera doesn't help either, sorry for the bad images! Much appreciated <3

https://en.numista.com/catalogue/index.php?e=china&r=%22fat+man+dollar%22&st=147-150-149&cat=y&im1=&im2=&ru=&ie=&no=&v=&cu=&a=&dg=&i=&b=&m=&f=&t=&t2=&w=&mt=&u=&c=&wi=&sw=

These were originally fantasy issues from the time, but these examples look to be modern reproductions