Featuring one of the worst designed trading card sets of all-time.
I purchased this 26 year old wax pack of 1990 Donruss Baseball for about $1.

Back in 1990 Donruss was a subsidiary of Leaf.
Base Cards
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27 - Donruss Diamond Kings Checklist

Donruss considered this checklist a "picture card."
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40 - Mark Gardner [RC]

Gardner went on to play for four teams through his 13-year career. He retired with an earned run average of 4.56, and 1,256 strikeouts. One season after retiring, he became the San Francisco Giants bullpen coach, a position that he holds until today.
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43 - Scott Coolbaugh [RC]

Coolbaugh bombed in the MLB with a batting average of .215 for 90 hits and 8 home runs.
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120 - Kurt Stillwell

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206 - George Bell

Bell entered the 1,000-plus runs batted in club just before he retired in 1993.
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244 - Andy Van Slyke

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333 - Bob Welch

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339 - Teodoro Higuera

- 375 - Richard Keith Mahler

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513 - Luis Salazar

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552 - Mike Davis

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580 - Mike Witt

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603 - Mike Sharperson

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633 - Oil Can Boyd

Clips of Boyd became really interesting on February 8, 2012.
Insert Cards
- Puzzle Pieces 22,23 and 24

That's the face of Carl Yastrzemski who played for the Boston Red Sox from 1961–1983. He retired with a batting average of .285 for 3,419 hits and 452 home runs.
My pack is missing one card. Odds are the seller removed an error card from this pack and forgot to replace it...