Collection: Mark McGwire Signed Memorabilia and Cards

Mark McGwire made his name as a power hitter for the Oakland Athletics and St. Louis Cardinals, and memorabilia carrying his signature or documenting his early career remains a steady draw for baseball collectors. Items tied to both stops in his career give buyers a way to focus on either the Oakland or St. Louis chapters of his playing days.

This collection includes autographed St. Louis Cardinals and Oakland green baseball jerseys, some framed, with authentication from JSA or Beckett BAS. There is also a signed Cardinals license plate with its own authentication, plus graded cards including a 1985 Topps USA Baseball Team rookie card (PSA 8) and a 1988 Topps second-year Rookie Cup card (PSA 10). Buyers should check the specific authentication company noted on each signed piece and confirm the PSA or grading label details before purchase.