MT Dollars:
I can well remember taking boxes of MT Dollars to Riyan and Salalah. The local workers would not accept being paid with anything else and certainly would not countenance paper money. I believe Maria Theresa died in 1780 so any dollar minted after that, still carried the date of 1780. They were also replicated in quite a few other countries other than Austria but the one common denominater was that they were 11/13ths fine (in old measurements). In other words, each coin had a silver content of about 85%.