OK, so what exactly are these?
The history of the Wa people of Eastern Burma is well known, and in particular how the collapse of the armed forces of the Communist Party of Burma, including many Wa fighters, created the rise of the United Wa State Army, whose influence grew to control a huge tract of border territory, and then, with the cease fires, developed into nation wide business interests, both legitimate and reputedly less so.
So are these “stamps” the creation of the UWSA? Colour photocopied (or computer printed), roughly gummed and perf or imperf, their source of supply seems to be a single dealer in India, which is perhaps a bit worrying. And his prices aren’t cheap! Certainly, if the denominations are anything to go by, they can be none too recent; pyas don’t exist these days, and today’s stamps are valued in hundreds of kyats. Similar labels exist marked “Shan State”, but neither type seems to have any connection with the many other (more or less) bogus labels created for the ethnic separatist groups of Burma over the last forty or so years. (Use the “Karenni” tag below for a few examples.)
If anyone has more information on these, I’d love to hear it.