The weighted average dollar exchange rate with tomorrow settlements amounted to RUR29.74 in the early trade today, moving down RUR0.06 against the official dollar rate set for today. The sag in the US currency against the ruble was catalyzed by commercial banks selling dollars in large volumes. Over the first half hour of trading, they sold $30m. Commercial bank dealers attribute the decline in the dollar to the Central Bank's refusal to help keeping the US currency up. Experts emphasized that the bank did not buy dollars at RUR29.7950 today, unlike on Friday.