P129 CEEFAX 129 Sat 16 Apr 17:21/25       FOREIGN EXCHANGES/FRIDAY CLOSE  Sterling all but bounced back through the $1.55 barrier as it staged fresh, across-the-board gains in pre-weekend trading. Dealers stressed, however, that most operators preferred to hold back ahead of the US money supply figures due later in the day. The pound closed at $1.5490 for a gain of more than three-quartets of a cent on the day. Elsewhere, thanks largely to an indifferent dollar performance, it posted sufficient gains to move five points higher in effective terms.  EXCHANGE RATES 135 