Dollar Sags in Europe as Traders Wait in Vain for U.S. to Intervene
dollar plunges to record lows on Eur currency mkts on Jan 3 as dealers await US intervention to bolster currency; Swiss franc, for 1st time, is worth more than 50c; decline places further strains on Eur joint float, forcing W Ger to support Norwegian krone; some prices on Eur and NY mkts cited; gold jumps $4.25 per ounce, to $169.50--highest point in more than 2 yrs (M)