On a stop over in Salalah I once helped to "count" several ammo boxes worth of MT dollars we had brought in with a mate of mine who was the "Fallous Man" on the strength there as a punishment posting. He said that one in a thousand was a genuine minted MT dollar from 1780 and all the rest were copies valued at a third of a pound each. I don't remember finding any genuine ones and we turned up at the mess with hands black as a miners from the silver. It cost him a lot of gin and tonics before the mortars started coming in from the Jebel. At that stage we couldn't care less with a couple of mil of wriggly tin above us to keep them out. Scared the little birds in the aviary though.