Saudi Riyal with error?

This is a saudi Riyal I got in a silver lot a while back. It has a nice strike on one side then smooth as a butt on the other with no trace of ever beening struck.
http://usera.imagecave.com/coffeyce/P7020039.JPG
http://usera.imagecave.com/coffeyce/P7020040.JPG
Chris
http://usera.imagecave.com/coffeyce/P7020039.JPG
http://usera.imagecave.com/coffeyce/P7020040.JPG
Chris
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Image help.....
That's because it's impossible to create a coin with only one die, just like it's impossible to clap with only one hand. To "strike" a coin like that, a specially prepared completely blank die would have had to have been made.
As confirmation, weigh the coin. This coin is supposed to weigh 11.60 grams; a coin polished flat on one side would have lost a measurable amount of silver.
Roman emperor Marcus Aurelius, "Meditations"
Apparently I have been awarded one DPOTD.