Presented is an outstanding game-used Louisville Slugger from power-hitting first baseman Bob Robertson, used during the 1970–1972 seasons, his peak years with the Pittsburgh Pirates. During this stretch, Robertson was a key contributor to the 1971 World Series Champion Pirates, delivering clutch postseason performances, including a legendary three-homer game in the NLCS. This PSA GU 9 graded bat shows exceptional game use, with numerous ball marks, stitch impressions, and cleat marks scattered across the barrel. The finish remains deep and rich, and the bat features a crack-free handle, helping it earn one of the highest possible evaluations from PSA/DNA. A powerful reminder of Robertson’s muscle in the heart of the Bucs’ lineup, this bat is not only an artifact of a champion, but also a trophy from one of the most dynamic eras in Pittsburgh baseball history.