From Albert Einstein’s notes to a record-breaking Frida Kahlo to a 6.6 million euro (US$6.79 million) triceratops — auction houses have lately seen a string of record-breaking items going under the hammer and through the roof. Valuations are becoming hard to judge. On Wednesday, the Einstein manuscript went for 11.3 million euros in Paris, five times its expected price. That came just days after a storyboard for the failed 1970s film version of Dune sparked a bidding war that pushed the price 100 times above the valuation to 2.7 million euros. <strong>NEW INTEREST</strong> Mark...