PITTSFIELD, Mass. – John Fontaine knew early on that he wanted to make a living running auctions. He began working for his dad in the family auction business starting at age 12. By the following year, he was conducting auctions for his father and guest auctioneering for people in the area. He was only in his early 20s when his father died in 1980, but he kept the business going. Today, Fontaine’s Auction Gallery is thriving and a third generation has signed on. His son, John, is an auction specialist, and his daughter, Mia, catalogs the jewelry and watches. The auction business has changed dramatically over Fontaine’s life, but one truth endures: good stuff is always in demand.