Strack made a study of eastern mint denarii (which I have not got access to) and as far as I am aware is the only published study of the eastern denarii of Hadrian. Did he include Sabina coins in this study? The range of style on these eastern denarii is huge ranging from nearing the quality of coins from Rome (in fact allocated to Rome) through to very crude to the extent that they could be considered barbs. When I was looking for these I could find examples that would be thought by Curtis to be "eastern" / "Mint in Asia Minor" but didn't match any of the current known dies. I think that there is much to be learned about this series but it will take specialist collectors sharing information to build up a picture of what is out there and the range of what could be called official and "eastern".
thank you Martin, here's the topic on Forum http://www.forumancientcoins.com/board/index.php?topic=115758.0 i Have the Strack book, and made comment in this topic on Forum
That there may have been as yet unidentified mints to the east of Rome is not hard to imagine. What I object to is calling everything that is stylistically different from the "normal" a product of some non-specific hypothetical eastern mint. It betrays a poor methodology based on conjecture more than observation. Style discrimination is simple observation, but associating a style type with a particular mint is not based on single isolated specimens, but on patterns. More importantly, since ancient counterfeits made from copycat dies are stylistically distinct too, it is necessary to discriminate.