1990 Post Cereal Mark McGwire #12
1990
See all Mark McGwire cards & values1990 seasonOakland AthleticsMark McGwire career & card values
$1.59est. value (ungraded)
Prices updated 2026-11-04
Based on recorded sold prices how we price cards
Mark McGwire price history
PSA 10 market value, one reading a day. One-day spikes that reverse the next day are left out.
Price by month
Average price of the 1990 Post Cereal Mark McGwire #12 each month, from 2 recorded price readings. Prices are re-checked regularly; a month's average counts each day from that month's first reading at the price that held that day.
| Month | Source | Average | Range |
|---|---|---|---|
| Nov 2026 | Market value | $1.59 | — |
| Oct 2026 | Market value | $1.59 | — |
Mark McGwire prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.59 | Buy on eBay ↗ |
| PSA 7 | $3.75 | Buy on eBay ↗ |
| PSA 8 | $12.99 | Buy on eBay ↗ |
| PSA 9 | $14.00 | Buy on eBay ↗ |
| Grade 9.5 | $39.34 | Buy on eBay ↗ |
| PSA 10 | $107.02 | Buy on eBay ↗ |
| BGS 10 | $139.00 | Buy on eBay ↗ |
| CGC 10 | $43.00 | Buy on eBay ↗ |
| SGC 10 | $64.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1990 Post Cereal Mark McGwire #12 value & prices
The 1990 Post Cereal Mark McGwire #12 is a Baseball card released in 1990. Ungraded copies carry a market value of about $1.59.
An ungraded copy is worth around $1.59, a PSA 9 around $14.00, a PSA 10 (Gem Mint) around $107.02 and a pristine BGS 10 around $139.00. That's roughly a 67× premium for a gem-mint copy over raw — one of the clearest signals that condition-sensitive buyers dominate this card's market.
Is it worth grading?
With raw copies near $1.59 and top grades reaching $107.02, grading a sharp copy of this card can clearly pay for itself — the spread comfortably covers a typical ~$25.00 grading fee. The catch: only submit copies with strong centering, clean corners, and unmarked surfaces, because anything below a 9 usually erases the math.
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