TOKYO, May 1 : Japan's top currency diplomat Atsushi Mimura said on Friday that speculative moves persist in markets, a clear signal that Tokyo stands ready to intervene to shore up the yen. "I won't comment on what we'll do ahead. But I will tell you that Japan's Golden Week holidays have just started," Mimura told reporters when asked whether Tokyo could intervene in the currency market. The remarks came after Finance Minister Satsuki Katayama said on Thursday that the moment for "decisive