I thought this was a really interesting example and had to have one for the denarii collection. Does anyone have a RIC # for this one? Seller's description says it's Arabia with branch to the left, a camel in the background and a bundle of cinnamon sticks upright in left arm. I read that they struck these on campaign at a mobile mint. Is that true or were they actually made in Rome? I would think this reverse could help narrow down the date of production. They don't seem as common.
Your coin is RIC II Rome 142. The COS V legends were struck between A.D. 103- 111; but this type references the annexation of Arabia which happened in A.D. 106. This was a diplomatic victory rather than a military victory. RIC rates it as common.