⚾ Vintage Autographed/Signed Bobby Bonilla New York Black Baseball Jersey JSA COA – Hand-Signed by the Switch-Hitting Corner Outfielder and Third Baseman Who Built His Career Foundation with the Pittsburgh Pirates Across Seven of His Most Productive Seasons Before Becoming a Central Figure in Two Separate New York Mets Chapters, Whose Combination of Left-Side and Right-Side Plate Production Made Him One of the Most Technically Versatile Power Hitters of the National League's Late-1980s and Early-1990s Golden Generation, Confirmed Authentic by James Spence Authentication

⚾ The black New York baseball jersey represents a specific and historically interesting chapter in the evolution of the Mets' uniform identity – a color alternative that the franchise introduced as part of the late 1990s alternate jersey culture that several National League clubs adopted, giving the traditionally blue-and-orange Mets a darker visual option whose aesthetic resonated with the era's sporting culture in a way that has since acquired the nostalgic patina that all era-specific uniform decisions eventually earn. Bobby Bonilla's signature on this black New York jersey connects the garment to a player whose New York chapter was itself the product of a career trajectory that began in Pittsburgh, continued through New York, and produced the kind of multi-franchise resumé that only the most durable and productive National League position players of his generation could claim. James Spence Authentication's confirmation that the signature is genuine places this jersey in the documented tier that serious memorabilia collectors require.

⚾ Bobby Bonilla's career foundation was built in Pittsburgh with the Pirates organization that acquired him in the 1985 trade that sent Joe Orsulak to the Orioles – the beginning of a Pittsburgh tenure that would run seven seasons across two stints and that established him as one of the National League's most productive corner men before New York knew his name. The Pittsburgh Pirates teams of 1990, 1991, and 1992 were the backbone of the National League East's most competitive era – a franchise that won three consecutive division titles with a roster built around Barry Bonds, Andy Van Slyke, Doug Drabek, and the switch-hitting third baseman and outfielder who combined with that talent core to make the Pirates the NL's most feared team for a three-year window. Bonilla's ability to generate power from both the left and right sides of the plate gave Pirates manager Jim Leyland a lineup construction flexibility that the three division titles benefitted from directly, and his Pittsburgh All-Star appearances established the national profile that made him one of the most sought-after free agents when he entered the market after the 1991 season.

⚾ The New York Mets' 1992 signing of Bobby Bonilla as a free agent was one of the era's most discussed transactions in National League circles – a franchise committing to one of the game's most productive corner players in a market where the Mets' ownership and fan base expected the acquisition to accelerate a competitive timeline that the team's talent base had not yet fully delivered. His subsequent years in New York across both his first and second Mets chapters, combined with his Pittsburgh return in 1995, gave his signed black New York jersey a documentary significance that spans the entire arc of a career whose connection to the National League East's most competitive period remains one of the era's richest single-player storylines. Condition: NOS.

✍️ This New York black baseball jersey carries Bobby Bonilla's personal signature, confirmed authentic by James Spence Authentication (JSA). Condition: NOS.

⚾ Bobby Bonilla. South Bronx, New York. Pittsburgh Pirates. New York Mets. Switch-Hitter. Five-Time All-Star. 287 Career Home Runs. Three-Time NL East Division Champion (1990, 1991, 1992). New York Black Baseball Jersey. JSA COA. Hall of Fame Sports Memorabilia. Condition: NOS.