Tristar Productions will host its 12th Annual Winter Classic this weekend at the Cow Palace in San Francisco. It’s the company’s second of just four shows scheduled for this year, with two events each in Houston and San Francisco. In the past, Tristar has run as many as 15 shows in a given year. “The profitability of past shows was not at the level it needed to be, and some of our exhibitors were not doing as well in some of the markets, so it was a pretty easy decision” to reduce the number of annual shows, said Tristar VP Bobby Mintz. “It’s kind of strange not producing as many shows, but we certainly have enough things to keep us busy.” Tristar will again oversee the autograph pavilion at this year’s National Sports Collectors Convention.