The US dollar traded at the mid-78 yen level early Wednesday in Tokyo. At 9 a.m., the dollar was quoted at 78.57-58 yen compared with 78.45-55 yen in New York and 78.58-59 yen in Tokyo at 5 p.m. Tuesday. The euro fetched 1.2569-2570 dollar and 98.75-78 yen against 1. 2560-2570 dollar and 98.60-70 yen in New York and 1.2506-2507 dollar and 98.27-31 yen in Tokyo late Tuesday afternoon.