HARTFORD, Conn. (AP) — Talk about your yard sale finds. A small porcelain bowl bought for $35 at a Connecticut yard sale turned out to be a rare, 15th century Chinese artifact worth between $300,000 and $500,000. It’s slated to go up for auction at Sotheby’s in two weeks. Sotheby’s says an antiques enthusiast came across the piece while browsing a yard sale in the New Haven area last year and paid the $35 asking price. Turns out it’s one of only seven such bowls known to exist in the world. How it ended up at the yard sale remains a mystery.