David, as I read again your post, are you talking about these?

These are called the Ersekė Provisonals, as they are believed to come from the small town of Ersekė.
The history of these is quite spotty. According to John Phipps (an exceptional reference for Albania and Epirus stamps), he mentions a couple of questionable covers which exist which were sent to Stamp dealers, but there is no evidence that the issues were ever authorized by any authority, including any of the government(s) of Autonomous Epirus.
Additionally, he states that Ersekė is such a small town (probably about 200 people at the time), it is doubtful they were ever officially issued.
I hope this helps.
Michael