SINGAPORE: Qatar has set its November retroactive official selling price (OSP) for its Marine crude at $74.35 a barrel, down $10.55 from the previous month, a trader with knowledge of the matter said on Wednesday.

The November OSP for Marine crude is the lowest since September 2010. The Gulf Arab state also set its October Qatar Land crude OSP at $76.20, down $10.30 from the previous month, the trader said.

Copyright Reuters, 2014