This article gives a detailed survey of Nabatean coins, with good photos. It also amounts to a brief history of the Nabatean kingdom, whose spoke language was pre-Islamic Arabic, but whose written language was Aramaic.
Kings Obodas II and Aretas IV come up in a past PaleoJudaica post here. Obodas I (I think) comes up in this post.
Cross-file under Nabatean Watch (Nabataean Watch). For many past posts on the Nabateans and their language, see here, here, here, and here, and follow the links. For still more, search the PaleoJudaica archive.
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