ASIA COFFEE-Vietnam domestic prices, Indonesia premium rise on thin supplies

HANOI/BANDAR LAMPUNG -- Vietnamese coffee prices extended gains on Thursday on concerns about thin supplies, traders said on Thursday. Farmers in the central highlands, Vietnam's largest coffee-growing area, were selling beans COFVN-DAK for VND73,000-75,000 (US$2.97-$3.05) per kg, up from VND71,000-72,900 last week. In Indonesia, Sumatra robusta coffee premium widened this week, also on thin supplies. Sumatra robusta bean is offered at a $500-520 premium for the February-March contract this week, compared with last week's premium of $500. A trader said the premium widened to $500 this week from $450 last week, adding that the trend "will continue for a while, at least until the expected main harvest in April and June."