The Giants will officially turn 50, so to speak, with the first pitch of Tuesday’s game at 1:34 p.m. On April 15, 1958, at that same time, Ruben Gomez delivered the inaugural pitch of Major League Baseball on the West Coast to the Dodgers’ Gino Cimoli.

Before the 50th anniversary game, Cimoli will throw out the ceremonial first pitch with Giants Hall of Famer Orlando Cepeda, the 1958 National League Rookie of the Year. The pregame ceremony will honor Horace Stoneham, the Giants owner who moved the team from New York to San Francisco, and throughout the game, the scoreboard will feature interviews with fans who recall that first game at Seals Stadium.

Speaking of Seals Stadium, at 10:30 a.m., the Giants will unveil a bronze plaque at the corner of 16th and Bryant streets, which is where Seals Stadium once stood. Cepeda, Willie Mays, Jim Davenport and Ed Bressoud from the 1958 team will attend, along with members of Stoneham’s family and the sisters of former Mayor George Christopher, who championed bringing the Giants to San Francisco.

If you’re coming to the game, get there early, since the first 20,000 fans will receive a print of the 1958 first pitch, adapted from Bill Purdom’s original painting. How nice is this print? When members of the media are offered some of the promotional items in the pressbox, like calendars or magnet schedules, a lot of them have little interest. But when the media folks got an early look at this print, they were practically lining up to get them, and at least one person has already purchased a frame for it.
After the anniversary game (which is also Jackie Robinson Day), the homestand wraps up Wednesday vs. the D-backs, with fans getting a reusable Giants grocery bag in celebration of Earth Day. It’s an especially timely giveaway, what with plastic grocery bags banned in many San Francisco stores.