BANK OF JAPAN TO SELL 800 BILLION YEN IN BILLS The Bank of Japan will sell tomorrow a total of 800 billion yen worth of financing bills from its holdings to help absorb a projected money market surplus of 1,700 billion yen, money traders said. Of the total, 300 billion yen will yield 3.8992 pct on sales from money houses to banks and securities houses in a 23-day repurchase accord maturing on April 24. The remaining 500 billion yen will yield 3.8990 pct in a 31-day repurchase pact maturing on May 2, they said. The repurchase agreement yields compare with the 3.8750 pct one-month commercial bill discount rate today and the 4.28/11 pct rate on one-month certificates of deposit. Tomorrow's surplus is attributable to excess bank holdings from sales of yen to buy dollars and to huge cash amounts to be redeposited at banks after the current financial year-end today, the traders said. The operation will put the outstanding bill supply at about 3,200 billion yen.