UPDATE 1-Yemen ups April Masila crude OSP to $2.55/bbl above dated Brent

* Marib Light crude OSP unchanged from previous month

* Unipec highest bidder for April Masila crude

(Adds details)

TOKYO, Feb 7 (Reuters) - Yemen has set the official

selling price (OSP) of its Masila crude for loading in April at

a premium of $2.55 a barrel to dated Brent, up 40 cents from the

previous month, the Yemeni government said late on Monday.

Unipec, the trading arm of China's largest refiner Sinopec

, was the highest bidder and will load all

2.4 million barrels of Masila crude available in April, the

government said in a statement sent by email.

Yemen set the April OSP for Marib Light crude at parity to

dated Brent, steady from the previous month. The government did

not announce quantities for Marib Light crude.

(Reporting by Risa Maeda and Osamu Tsukimori; Editing by

Michael Watson)