Hi WilderScot,
I'm afraid I don't believe this postmark.

This 2 soldi Austro-Hungarian Post Offices stamp is common mint but rare and expensive with a genuine postmark so it's a good candidate to have a forged postmark.
The main problem, as you say, is that Tirana is not known to have had an Austro-Hungarian post office. As well as the catalogues you've mentioned, it's not in the detailed list in Stanley Gibbons.
The format of the postmark with its double ring doesn't match the formats that I've seen used by any of the post offices on this issue.