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The Middle Eastern nation raised the OSP for Iranian Light crude by 90 cents to $2.85 above Oman/Dubai quotes from a $1.95 premium in October.
The OSP for Iranian Heavy was raised to 5 cents above Oman/Dubai quotes, while that for Forozan was raised to 75 cents above Oman/Dubai, compared with a 5 cent discount in October.
Iran left OSPs of Soroush and Norouz grades unchanged at $6.10 a barrel discount to Iranian Heavy OSP for November, the sources said.