Scully was born in 1927, so I place him in the last wave of baseball's G.I. Generation - players born from 1912 to 1928. He represents the last remaining link to that generation; its last member to retire from baseball.
The best players of that generation - Ted Williams and Stan Musial and Joe DiMaggio and Warren Spahn and Jackie Robinson - were all active when Scully began calling Brooklyn Dodgers games in 1950 at the age of 22.
The last player of that generation to appear in MLB was Minnie Minoso, who went a combined 1-for-10 in a handful of appearances in 1976 and 1980 when he was in his fifties. Besides Minoso, that generation's last major leaguer was Hoyt Wilhelm, who pitched his final 16 games for Scully's Dodgers in 1972.
Going by baseball-reference WAR, the best individual Dodger season of Scully's long tenure was Sandy Koufax, 1963, and the best season by a position player was Jackie Robinson, 1951 (Scully's second year in the booth). Using the baseball-reference play index finder, I compiled a 25-man all-star team of the best Dodger seasons of the Vin Scully years, 1950-2016: