How much is a 1978 1978 Jack Wallin Grand Slam Wally Berger #20 worth?

As of 2054, Rawcomps has tracked 0 raw-condition sales for the 1978 1978 Jack Wallin Grand Slam #20 Wally Berger. Condition, original ownership provenance, and presence of an original wrapper or pack provenance all materially shift the market when sales do appear. Source: https://www.psacard.com/auctionprices

What's the difference between graded and raw 1978 1978 Jack Wallin Grand Slam #20?

Graded copies of the 1978 1978 Jack Wallin Grand Slam #20 are sealed in PSA, SGC, or BGS holders with an assigned condition grade on a 1–10 scale; raw copies are ungraded and the buyer assesses condition directly. Graded copies typically command a premium because the holder authenticates and grades the card in one step — but for raw cards, the upside is condition-judgment that beats the grader's eye. Source: https://www.psacard.com/services/grading

Is my 1978 1978 Jack Wallin Grand Slam #20 a reprint?

Reprints exist for nearly every popular pre-1980 baseball card (including the 1978 1978 Jack Wallin Grand Slam Wally Berger). Originals show period-appropriate cardstock thickness, an offset-printing dot pattern visible under a 10× loupe, and back-design fidelity matching the era's printing process. If the card has modern gloss, sharp uncreased corners on a card that should show 76+ years of age, or paper that feels too white and crisp, treat it as a reprint until verified by a professional grading service. Source: https://www.psacard.com/services/authentication

1978 Jack Wallin Grand Slam · #20

Wally Berger

Comp signal

Condition-aware breakdown

Comps coming soon

This card is catalogued. Sold-data coverage is still being added.

Set: 1978 Jack Wallin Grand Slam
Year: 1978
Card #: 20
Set code: 1978_JACK_WALLIN_GRAND_SLAM

Population

Research pending — Rawcomps does not yet have a verified, card-level grading-population join for this record.

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