Collection of 12 stubs hailing from three separate NBA playoff series featuring the 1991-92 Chicago Bulls. All stubs in this collection originate from Blackhawks superfan, Bob Gertenrich, aka "Blackhawk Bob," who was a fixture at sporting events in Chicago beginning in the 1960's. Bob has applied his handwritten notations in black ink to the face of each stub, providing the date and outcome of the associated games. While Bob was diligent with his record keeping, the notations do reduce technical grades of all examples. Stubs in this collection appear to be well handled with wrinkles and/or creasing present to most examples, though only obvious when tilted towards a light source. Technical grades across the group range from PR-GD. Collection includes: Eastern Conference First Round - Games 1, 2; Eastern Conference Semifinals - Games 1, 2, 5, 7; Eastern Conference Finals - Games 1, 2, 5; NBA Finals - Games 1, 2, 6 (Bulls clinch second consecutive NBA championship). 12 stubs total.