A Danish King provides me with an X (and by chance the only King of Iceland too as Kristján X from 1918-1944).
A Tanzania butterfly's Latin name provides me with two Xs -
For other X related stamps cross over to seeitonapostcard.blogspot.com x.
Denmark - 1942
King Christian X of Denmark became the symbol of Danish resistance to German occupation during WWII and helped finance the transportation of Danish Jews to neutral Sweden. He reigned from 1912 to 1947.A Tanzania butterfly's Latin name provides me with two Xs -
Tanzania - 10 December 1975
Axiocerses styx
For other X related stamps cross over to seeitonapostcard.blogspot.com x.