= Special Unicom = JOHANNESBURG, May 24 (AFP) - The rand weakened against the dollar in early trade here Monday, opening at 6.2330/45 to the dollar against an afternoon fix of 6.1960/75 on Friday. Gold opened here at 272.30/80 dollars an ounce. Other currencies: Monday's opening Friday's spot Sterling: 9.9785/95 9.9614/24 Euro: 6.5859/69 6.5702/12 German mark: 0.2969/79 0.2977/87 Swiss franc: 0.2435/45 0.2440/50 Yen: 19.9046/56 19.8800/10  