NEW YORK, N.Y. (REUTERS).- A towering Fernando Botero sculpture and a painting by Mexican master Rufino Tamayo lead Latin American art auctions this week, which could benefit from strong demand seen in earlier art sales in New York. Botero’s bronze “Dancers,” which was cast in 2007 and is 10 feet 5 inches tall, could sell for as much as $2 million when it goes under the hammer at Christie’s. If it reaches its top estimate it will exceed the $1.6 million auction record for a Botero sculpture, said Virglio Garza, Christie’s Latin American art chief. “It could be one of his tallest sculptures ever to come to auction,” he said. “It’s unusual because the dancers are of equal proportion. Normally Botero shows one dancer as larger.” As an example, he pointed to Botero’s 1982 painting “Dancing Couple,” which