I also have started to investigate this period of coinage and i am awaiting my local
library to obtain a copy of Stuart
Munro Hay, "Coinage of
Arabia Felix", which i understand covers this period of coinage. This book is available but like most numismatic references quite expensive.
I bought three as a group at my local coin
fair, mainly because i
had never seen them before, just like to be different, buy the coins before the book
Regards
apgrassman