DEAUVILLE, France--The temperature is rising at Arqana and so, too, are the stakes. Breeze-up consignors young and old have made no secret about the fact that trade this year has been tricky, particularly at the middle to lower tiers. All duck or no dinner, feast or famine--whatever way you want to describe it, vendors have had to negotiate some choppy waters, meaning a lot is still on the line at Arqana when the sale gets underway at 11am on Saturday. But, weirdly, the optimism is palpable. Maybe it's the baking...