A rare skeleton of a saber-toothed tiger which roamed the northern United States some 37 million years ago is estimated to fetch 60-80,000 Swiss francs next week, auction house Piguet said on Tuesday. It is particularly rare because its skeleton is 90% complete,” Piguet director Bernard Piguet told Reuters Television. Fabrice Van Rutten, Piguet’s antiquity art specialist, said the item …