Yes, but why did the H make the singles and not the shared coins? Also, the shared coins do not claim the title Augustus. Perhaps they were issued in a period where the desire was to appear more friendly or less threatening to Aurelian.
"With Aurelian he is Vabalathus but when striking alone at Antioch he was Vhabalathus. At Alexandria the Greek form has a double lambda." From a Doug post in 2011.