And coloidal silver been big for long time. (not sure if related to 'currencies")
I see Silver (finite amt) digitally enabled.
and anon
1oz = $100
easy to break down to "smaller notes" via paper (anon)
https://archive.org/search.php?query=creator%3A%22Deutsche+Gesellschaft+f%C3%83%C2%BCr+Christliche+Kunst%22