1979 O Pee Chee Mario Guerrero #131
1979
See all Mario Guerrero cards & values$1.49est. value (ungraded)
Prices updated 2026-10-22
Based on recorded sold prices how we price cards
Price by month
Average price of the 1979 O Pee Chee Mario Guerrero #131 each month, from 1 recorded price reading. 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 |
|---|---|---|---|
| Oct 2026 | Market value | $1.49 | — |
Mario Guerrero prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.49 | Buy on eBay ↗ |
| PSA 9 | $2.83 | Buy on eBay ↗ |
| Grade 9.5 | $3.00 | Buy on eBay ↗ |
| PSA 10 | $31.53 | Buy on eBay ↗ |
| BGS 10 | $41.00 | Buy on eBay ↗ |
| CGC 10 | $19.00 | Buy on eBay ↗ |
| SGC 10 | $19.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1979 O Pee Chee Mario Guerrero #131 value & prices
The 1979 O Pee Chee Mario Guerrero #131 is a Baseball card released in 1979. Ungraded copies carry a market value of about $1.49.
An ungraded copy is worth around $1.49, a PSA 9 around $2.83, a PSA 10 (Gem Mint) around $31.53 and a pristine BGS 10 around $41.00. That's roughly a 21× 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?
The spread between raw ($1.49) and top-graded ($31.53) copies is fairly tight, so grading this card only makes financial sense for truly flawless copies — or for collectors who simply prefer slabbed cards for protection and display.
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